80481520

素因数分解:

$2^4\times 5^1\times 7^4\times {\mathrm{419}}^1$

素因数の和:460

約数の個数: 100

約数和(自身を含む): 218814120

約数和(自身を除く): 138332600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 419, 490, 560, 686, 784, 838, 980, 1372, 1676, 1715, 1960, 2095, 2401, 2744, 2933, 3352, 3430, 3920, 4190, 4802, 5488, 5866, 6704, 6860, 8380, 9604, 11732, 12005, 13720, 14665, 16760, 19208, 20531, 23464, 24010, 27440, 29330, 33520, 38416, 41062, 46928, 48020, 58660, 82124, 96040, 102655, 117320, 143717, 164248, 192080, 205310, 234640, 287434, 328496, 410620, 574868, 718585, 821240, 1006019, 1149736, 1437170, 1642480, 2012038, 2299472, 2874340, 4024076, 5030095, 5748680, 8048152, 10060190, 11497360, 16096304, 20120380, 40240760, 80481520]

約数ペア:

[(1, 80481520), (2, 40240760), (4, 20120380), (5, 16096304), (7, 11497360), (8, 10060190), (10, 8048152), (14, 5748680), (16, 5030095), (20, 4024076), (28, 2874340), (35, 2299472), (40, 2012038), (49, 1642480), (56, 1437170), (70, 1149736), (80, 1006019), (98, 821240), (112, 718585), (140, 574868), (196, 410620), (245, 328496), (280, 287434), (343, 234640), (392, 205310), (419, 192080), (490, 164248), (560, 143717), (686, 117320), (784, 102655), (838, 96040), (980, 82124), (1372, 58660), (1676, 48020), (1715, 46928), (1960, 41062), (2095, 38416), (2401, 33520), (2744, 29330), (2933, 27440), (3352, 24010), (3430, 23464), (3920, 20531), (4190, 19208), (4802, 16760), (5488, 14665), (5866, 13720), (6704, 12005), (6860, 11732), (8380, 9604)]