21625864

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{207941}}^1$

素因数の和:207960

約数の個数: 16

約数和(自身を含む): 43667820

約数和(自身を除く): 22041956

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 207941, 415882, 831764, 1663528, 2703233, 5406466, 10812932, 21625864]

約数ペア:

[(1, 21625864), (2, 10812932), (4, 5406466), (8, 2703233), (13, 1663528), (26, 831764), (52, 415882), (104, 207941)]