21408010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{164677}}^1$

素因数の和:164697

約数の個数: 16

約数和(自身を含む): 41498856

約数和(自身を除く): 20090846

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 164677, 329354, 823385, 1646770, 2140801, 4281602, 10704005, 21408010]

約数ペア:

[(1, 21408010), (2, 10704005), (5, 4281602), (10, 2140801), (13, 1646770), (26, 823385), (65, 329354), (130, 164677)]