21315960

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:89

約数の個数: 224

約数和(自身を含む): 77909040

約数和(自身を除く): 56593080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 27, 30, 34, 36, 40, 43, 45, 51, 54, 60, 68, 72, 81, 85, 86, 90, 102, 108, 120, 129, 135, 136, 153, 162, 170, 172, 180, 204, 215, 216, 243, 255, 258, 270, 306, 324, 340, 344, 360, 387, 405, 408, 430, 459, 486, 510, 516, 540, 612, 645, 648, 680, 729, 731, 765, 774, 810, 860, 918, 972, 1020, 1032, 1080, 1161, 1215, 1224, 1290, 1377, 1458, 1462, 1530, 1548, 1620, 1720, 1836, 1935, 1944, 2040, 2193, 2295, 2322, 2430, 2580, 2754, 2916, 2924, 3060, 3096, 3240, 3483, 3645, 3655, 3672, 3870, 4131, 4386, 4590, 4644, 4860, 5160, 5508, 5805, 5832, 5848, 6120, 6579, 6885, 6966, 7290, 7310, 7740, 8262, 8772, 9180, 9288, 9720, 10449, 10965, 11016, 11610, 12393, 13158, 13770, 13932, 14580, 14620, 15480, 16524, 17415, 17544, 18360, 19737, 20655, 20898, 21930, 23220, 24786, 26316, 27540, 27864, 29160, 29240, 31347, 32895, 33048, 34830, 39474, 41310, 41796, 43860, 46440, 49572, 52245, 52632, 55080, 59211, 61965, 62694, 65790, 69660, 78948, 82620, 83592, 87720, 98685, 99144, 104490, 118422, 123930, 125388, 131580, 139320, 156735, 157896, 165240, 177633, 197370, 208980, 236844, 247860, 250776, 263160, 296055, 313470, 355266, 394740, 417960, 473688, 495720, 532899, 592110, 626940, 710532, 789480, 888165, 1065798, 1184220, 1253880, 1421064, 1776330, 2131596, 2368440, 2664495, 3552660, 4263192, 5328990, 7105320, 10657980, 21315960]

約数ペア:

[(1, 21315960), (2, 10657980), (3, 7105320), (4, 5328990), (5, 4263192), (6, 3552660), (8, 2664495), (9, 2368440), (10, 2131596), (12, 1776330), (15, 1421064), (17, 1253880), (18, 1184220), (20, 1065798), (24, 888165), (27, 789480), (30, 710532), (34, 626940), (36, 592110), (40, 532899), (43, 495720), (45, 473688), (51, 417960), (54, 394740), (60, 355266), (68, 313470), (72, 296055), (81, 263160), (85, 250776), (86, 247860), (90, 236844), (102, 208980), (108, 197370), (120, 177633), (129, 165240), (135, 157896), (136, 156735), (153, 139320), (162, 131580), (170, 125388), (172, 123930), (180, 118422), (204, 104490), (215, 99144), (216, 98685), (243, 87720), (255, 83592), (258, 82620), (270, 78948), (306, 69660), (324, 65790), (340, 62694), (344, 61965), (360, 59211), (387, 55080), (405, 52632), (408, 52245), (430, 49572), (459, 46440), (486, 43860), (510, 41796), (516, 41310), (540, 39474), (612, 34830), (645, 33048), (648, 32895), (680, 31347), (729, 29240), (731, 29160), (765, 27864), (774, 27540), (810, 26316), (860, 24786), (918, 23220), (972, 21930), (1020, 20898), (1032, 20655), (1080, 19737), (1161, 18360), (1215, 17544), (1224, 17415), (1290, 16524), (1377, 15480), (1458, 14620), (1462, 14580), (1530, 13932), (1548, 13770), (1620, 13158), (1720, 12393), (1836, 11610), (1935, 11016), (1944, 10965), (2040, 10449), (2193, 9720), (2295, 9288), (2322, 9180), (2430, 8772), (2580, 8262), (2754, 7740), (2916, 7310), (2924, 7290), (3060, 6966), (3096, 6885), (3240, 6579), (3483, 6120), (3645, 5848), (3655, 5832), (3672, 5805), (3870, 5508), (4131, 5160), (4386, 4860), (4590, 4644)]