21140320

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3571}}^1$

素因数の和:3623

約数の個数: 48

約数和(自身を含む): 51308208

約数和(自身を除く): 30167888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3571, 5920, 7142, 14284, 17855, 28568, 35710, 57136, 71420, 114272, 132127, 142840, 264254, 285680, 528508, 571360, 660635, 1057016, 1321270, 2114032, 2642540, 4228064, 5285080, 10570160, 21140320]

約数ペア:

[(1, 21140320), (2, 10570160), (4, 5285080), (5, 4228064), (8, 2642540), (10, 2114032), (16, 1321270), (20, 1057016), (32, 660635), (37, 571360), (40, 528508), (74, 285680), (80, 264254), (148, 142840), (160, 132127), (185, 114272), (296, 71420), (370, 57136), (592, 35710), (740, 28568), (1184, 17855), (1480, 14284), (2960, 7142), (3571, 5920)]