811420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1399}}^1$

素因数の和:1437

約数の個数: 24

約数和(自身を含む): 1764000

約数和(自身を除く): 952580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 1399, 2798, 5596, 6995, 13990, 27980, 40571, 81142, 162284, 202855, 405710, 811420]

約数ペア:

[(1, 811420), (2, 405710), (4, 202855), (5, 162284), (10, 81142), (20, 40571), (29, 27980), (58, 13990), (116, 6995), (145, 5596), (290, 2798), (580, 1399)]