81711180

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:107

約数の個数: 288

約数和(自身を含む): 290594304

約数和(自身を除く): 208883124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 27, 30, 34, 36, 43, 45, 46, 51, 54, 60, 68, 69, 81, 85, 86, 90, 92, 102, 108, 115, 129, 135, 138, 153, 162, 170, 172, 180, 204, 207, 215, 230, 243, 255, 258, 270, 276, 306, 324, 340, 345, 387, 391, 405, 414, 430, 459, 460, 486, 510, 516, 540, 612, 621, 645, 690, 731, 765, 774, 782, 810, 828, 860, 918, 972, 989, 1020, 1035, 1161, 1173, 1215, 1242, 1290, 1377, 1380, 1462, 1530, 1548, 1564, 1620, 1836, 1863, 1935, 1955, 1978, 2070, 2193, 2295, 2322, 2346, 2430, 2484, 2580, 2754, 2924, 2967, 3060, 3105, 3483, 3519, 3655, 3726, 3870, 3910, 3956, 4131, 4140, 4386, 4590, 4644, 4692, 4860, 4945, 5508, 5589, 5805, 5865, 5934, 6210, 6579, 6885, 6966, 7038, 7310, 7452, 7740, 7820, 8262, 8772, 8901, 9180, 9315, 9890, 10449, 10557, 10965, 11178, 11610, 11730, 11868, 12420, 13158, 13770, 13932, 14076, 14620, 14835, 16524, 16813, 17415, 17595, 17802, 18630, 19737, 19780, 20655, 20898, 21114, 21930, 22356, 23220, 23460, 26316, 26703, 27540, 27945, 29670, 31671, 32895, 33626, 34830, 35190, 35604, 37260, 39474, 41310, 41796, 42228, 43860, 44505, 50439, 52245, 52785, 53406, 55890, 59211, 59340, 63342, 65790, 67252, 69660, 70380, 78948, 80109, 82620, 84065, 89010, 95013, 98685, 100878, 104490, 105570, 106812, 111780, 118422, 126684, 131580, 133515, 151317, 158355, 160218, 168130, 177633, 178020, 190026, 197370, 201756, 208980, 211140, 236844, 240327, 252195, 267030, 296055, 302634, 316710, 320436, 336260, 355266, 380052, 394740, 400545, 453951, 475065, 480654, 504390, 534060, 592110, 605268, 633420, 710532, 756585, 801090, 888165, 907902, 950130, 961308, 1008780, 1184220, 1201635, 1361853, 1513170, 1602180, 1776330, 1815804, 1900260, 2269755, 2403270, 2723706, 3026340, 3552660, 4085559, 4539510, 4806540, 5447412, 6809265, 8171118, 9079020, 13618530, 16342236, 20427795, 27237060, 40855590, 81711180]

約数ペア:

[(1, 81711180), (2, 40855590), (3, 27237060), (4, 20427795), (5, 16342236), (6, 13618530), (9, 9079020), (10, 8171118), (12, 6809265), (15, 5447412), (17, 4806540), (18, 4539510), (20, 4085559), (23, 3552660), (27, 3026340), (30, 2723706), (34, 2403270), (36, 2269755), (43, 1900260), (45, 1815804), (46, 1776330), (51, 1602180), (54, 1513170), (60, 1361853), (68, 1201635), (69, 1184220), (81, 1008780), (85, 961308), (86, 950130), (90, 907902), (92, 888165), (102, 801090), (108, 756585), (115, 710532), (129, 633420), (135, 605268), (138, 592110), (153, 534060), (162, 504390), (170, 480654), (172, 475065), (180, 453951), (204, 400545), (207, 394740), (215, 380052), (230, 355266), (243, 336260), (255, 320436), (258, 316710), (270, 302634), (276, 296055), (306, 267030), (324, 252195), (340, 240327), (345, 236844), (387, 211140), (391, 208980), (405, 201756), (414, 197370), (430, 190026), (459, 178020), (460, 177633), (486, 168130), (510, 160218), (516, 158355), (540, 151317), (612, 133515), (621, 131580), (645, 126684), (690, 118422), (731, 111780), (765, 106812), (774, 105570), (782, 104490), (810, 100878), (828, 98685), (860, 95013), (918, 89010), (972, 84065), (989, 82620), (1020, 80109), (1035, 78948), (1161, 70380), (1173, 69660), (1215, 67252), (1242, 65790), (1290, 63342), (1377, 59340), (1380, 59211), (1462, 55890), (1530, 53406), (1548, 52785), (1564, 52245), (1620, 50439), (1836, 44505), (1863, 43860), (1935, 42228), (1955, 41796), (1978, 41310), (2070, 39474), (2193, 37260), (2295, 35604), (2322, 35190), (2346, 34830), (2430, 33626), (2484, 32895), (2580, 31671), (2754, 29670), (2924, 27945), (2967, 27540), (3060, 26703), (3105, 26316), (3483, 23460), (3519, 23220), (3655, 22356), (3726, 21930), (3870, 21114), (3910, 20898), (3956, 20655), (4131, 19780), (4140, 19737), (4386, 18630), (4590, 17802), (4644, 17595), (4692, 17415), (4860, 16813), (4945, 16524), (5508, 14835), (5589, 14620), (5805, 14076), (5865, 13932), (5934, 13770), (6210, 13158), (6579, 12420), (6885, 11868), (6966, 11730), (7038, 11610), (7310, 11178), (7452, 10965), (7740, 10557), (7820, 10449), (8262, 9890), (8772, 9315), (8901, 9180)]