21194680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40759}}^1$

素因数の和:40783

約数の個数: 32

約数和(自身を含む): 51357600

約数和(自身を除く): 30162920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40759, 81518, 163036, 203795, 326072, 407590, 529867, 815180, 1059734, 1630360, 2119468, 2649335, 4238936, 5298670, 10597340, 21194680]

約数ペア:

[(1, 21194680), (2, 10597340), (4, 5298670), (5, 4238936), (8, 2649335), (10, 2119468), (13, 1630360), (20, 1059734), (26, 815180), (40, 529867), (52, 407590), (65, 326072), (104, 203795), (130, 163036), (260, 81518), (520, 40759)]