640238040

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1471}}^1$

素因数の和:1535

約数の個数: 256

約数和(自身を含む): 2374041600

約数和(自身を除く): 1733803560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 31, 36, 39, 40, 45, 52, 54, 60, 62, 65, 72, 78, 90, 93, 104, 108, 117, 120, 124, 130, 135, 155, 156, 180, 186, 195, 216, 234, 248, 260, 270, 279, 310, 312, 351, 360, 372, 390, 403, 465, 468, 520, 540, 558, 585, 620, 702, 744, 780, 806, 837, 930, 936, 1080, 1116, 1170, 1209, 1240, 1395, 1404, 1471, 1560, 1612, 1674, 1755, 1860, 2015, 2232, 2340, 2418, 2790, 2808, 2942, 3224, 3348, 3510, 3627, 3720, 4030, 4185, 4413, 4680, 4836, 5580, 5884, 6045, 6696, 7020, 7254, 7355, 8060, 8370, 8826, 9672, 10881, 11160, 11768, 12090, 13239, 14040, 14508, 14710, 16120, 16740, 17652, 18135, 19123, 21762, 22065, 24180, 26478, 29016, 29420, 33480, 35304, 36270, 38246, 39717, 43524, 44130, 45601, 48360, 52956, 54405, 57369, 58840, 66195, 72540, 76492, 79434, 87048, 88260, 91202, 95615, 105912, 108810, 114738, 132390, 136803, 145080, 152984, 158868, 172107, 176520, 182404, 191230, 198585, 217620, 228005, 229476, 264780, 273606, 286845, 317736, 344214, 364808, 382460, 397170, 410409, 435240, 456010, 458952, 516321, 529560, 547212, 573690, 592813, 684015, 688428, 764920, 794340, 820818, 860535, 912020, 1032642, 1094424, 1147380, 1185626, 1231227, 1368030, 1376856, 1588680, 1641636, 1721070, 1778439, 1824040, 2052045, 2065284, 2294760, 2371252, 2462454, 2581605, 2736060, 2964065, 3283272, 3442140, 3556878, 4104090, 4130568, 4742504, 4924908, 5163210, 5335317, 5472120, 5928130, 6156135, 6884280, 7113756, 8208180, 8892195, 9849816, 10326420, 10670634, 11856260, 12312270, 14227512, 16005951, 16416360, 17784390, 20652840, 21341268, 23712520, 24624540, 26676585, 32011902, 35568780, 42682536, 49249080, 53353170, 64023804, 71137560, 80029755, 106706340, 128047608, 160059510, 213412680, 320119020, 640238040]

約数ペア:

[(1, 640238040), (2, 320119020), (3, 213412680), (4, 160059510), (5, 128047608), (6, 106706340), (8, 80029755), (9, 71137560), (10, 64023804), (12, 53353170), (13, 49249080), (15, 42682536), (18, 35568780), (20, 32011902), (24, 26676585), (26, 24624540), (27, 23712520), (30, 21341268), (31, 20652840), (36, 17784390), (39, 16416360), (40, 16005951), (45, 14227512), (52, 12312270), (54, 11856260), (60, 10670634), (62, 10326420), (65, 9849816), (72, 8892195), (78, 8208180), (90, 7113756), (93, 6884280), (104, 6156135), (108, 5928130), (117, 5472120), (120, 5335317), (124, 5163210), (130, 4924908), (135, 4742504), (155, 4130568), (156, 4104090), (180, 3556878), (186, 3442140), (195, 3283272), (216, 2964065), (234, 2736060), (248, 2581605), (260, 2462454), (270, 2371252), (279, 2294760), (310, 2065284), (312, 2052045), (351, 1824040), (360, 1778439), (372, 1721070), (390, 1641636), (403, 1588680), (465, 1376856), (468, 1368030), (520, 1231227), (540, 1185626), (558, 1147380), (585, 1094424), (620, 1032642), (702, 912020), (744, 860535), (780, 820818), (806, 794340), (837, 764920), (930, 688428), (936, 684015), (1080, 592813), (1116, 573690), (1170, 547212), (1209, 529560), (1240, 516321), (1395, 458952), (1404, 456010), (1471, 435240), (1560, 410409), (1612, 397170), (1674, 382460), (1755, 364808), (1860, 344214), (2015, 317736), (2232, 286845), (2340, 273606), (2418, 264780), (2790, 229476), (2808, 228005), (2942, 217620), (3224, 198585), (3348, 191230), (3510, 182404), (3627, 176520), (3720, 172107), (4030, 158868), (4185, 152984), (4413, 145080), (4680, 136803), (4836, 132390), (5580, 114738), (5884, 108810), (6045, 105912), (6696, 95615), (7020, 91202), (7254, 88260), (7355, 87048), (8060, 79434), (8370, 76492), (8826, 72540), (9672, 66195), (10881, 58840), (11160, 57369), (11768, 54405), (12090, 52956), (13239, 48360), (14040, 45601), (14508, 44130), (14710, 43524), (16120, 39717), (16740, 38246), (17652, 36270), (18135, 35304), (19123, 33480), (21762, 29420), (22065, 29016), (24180, 26478)]