490634140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{345517}}^1$

素因数の和:345597

約数の個数: 24

約数和(自身を含む): 1044846432

約数和(自身を除く): 554212292

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 345517, 691034, 1382068, 1727585, 3455170, 6910340, 24531707, 49063414, 98126828, 122658535, 245317070, 490634140]

約数ペア:

[(1, 490634140), (2, 245317070), (4, 122658535), (5, 98126828), (10, 49063414), (20, 24531707), (71, 6910340), (142, 3455170), (284, 1727585), (355, 1382068), (710, 691034), (1420, 345517)]