1639640

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{229}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 3726000

約数和(自身を除く): 2086360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 229, 358, 458, 716, 895, 916, 1145, 1432, 1790, 1832, 2290, 3580, 4580, 7160, 9160, 40991, 81982, 163964, 204955, 327928, 409910, 819820, 1639640]

約数ペア:

[(1, 1639640), (2, 819820), (4, 409910), (5, 327928), (8, 204955), (10, 163964), (20, 81982), (40, 40991), (179, 9160), (229, 7160), (358, 4580), (458, 3580), (716, 2290), (895, 1832), (916, 1790), (1145, 1432)]