20280491240

素因数分解:

$2^3\times 5^1\times {\mathrm{709}}^1\times {\mathrm{715109}}^1$

素因数の和:715829

約数の個数: 32

約数和(自身を含む): 45695529000

約数和(自身を除く): 25415037760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 709, 1418, 2836, 3545, 5672, 7090, 14180, 28360, 715109, 1430218, 2860436, 3575545, 5720872, 7151090, 14302180, 28604360, 507012281, 1014024562, 2028049124, 2535061405, 4056098248, 5070122810, 10140245620, 20280491240]

約数ペア:

[(1, 20280491240), (2, 10140245620), (4, 5070122810), (5, 4056098248), (8, 2535061405), (10, 2028049124), (20, 1014024562), (40, 507012281), (709, 28604360), (1418, 14302180), (2836, 7151090), (3545, 5720872), (5672, 3575545), (7090, 2860436), (14180, 1430218), (28360, 715109)]