438547640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{644923}}^1$

素因数の和:644951

約数の個数: 32

約数和(自身を含む): 1044776880

約数和(自身を除く): 606229240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 644923, 1289846, 2579692, 3224615, 5159384, 6449230, 10963691, 12898460, 21927382, 25796920, 43854764, 54818455, 87709528, 109636910, 219273820, 438547640]

約数ペア:

[(1, 438547640), (2, 219273820), (4, 109636910), (5, 87709528), (8, 54818455), (10, 43854764), (17, 25796920), (20, 21927382), (34, 12898460), (40, 10963691), (68, 6449230), (85, 5159384), (136, 3224615), (170, 2579692), (340, 1289846), (680, 644923)]