21015030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13217}}^1$

素因数の和:13280

約数の個数: 32

約数和(自身を含む): 51391584

約数和(自身を除く): 30376554

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 13217, 26434, 39651, 66085, 79302, 132170, 198255, 396510, 700501, 1401002, 2101503, 3502505, 4203006, 7005010, 10507515, 21015030]

約数ペア:

[(1, 21015030), (2, 10507515), (3, 7005010), (5, 4203006), (6, 3502505), (10, 2101503), (15, 1401002), (30, 700501), (53, 396510), (106, 198255), (159, 132170), (265, 79302), (318, 66085), (530, 39651), (795, 26434), (1590, 13217)]