21842860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84011}}^1$

素因数の和:84033

約数の個数: 24

約数和(自身を含む): 49399056

約数和(自身を除く): 27556196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84011, 168022, 336044, 420055, 840110, 1092143, 1680220, 2184286, 4368572, 5460715, 10921430, 21842860]

約数ペア:

[(1, 21842860), (2, 10921430), (4, 5460715), (5, 4368572), (10, 2184286), (13, 1680220), (20, 1092143), (26, 840110), (52, 420055), (65, 336044), (130, 168022), (260, 84011)]