12561820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20261}}^1$

素因数の和:20301

約数の個数: 24

約数和(自身を含む): 27232128

約数和(自身を除く): 14670308

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 20261, 40522, 81044, 101305, 202610, 405220, 628091, 1256182, 2512364, 3140455, 6280910, 12561820]

約数ペア:

[(1, 12561820), (2, 6280910), (4, 3140455), (5, 2512364), (10, 1256182), (20, 628091), (31, 405220), (62, 202610), (124, 101305), (155, 81044), (310, 40522), (620, 20261)]