19662657

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^2\times {\mathrm{557}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 30765888

約数和(自身を除く): 11103231

約数列:

[1, 3, 7, 21, 41, 123, 287, 557, 861, 1671, 1681, 3899, 5043, 11697, 11767, 22837, 35301, 68511, 159859, 479577, 936317, 2808951, 6554219, 19662657]

約数ペア:

[(1, 19662657), (3, 6554219), (7, 2808951), (21, 936317), (41, 479577), (123, 159859), (287, 68511), (557, 35301), (861, 22837), (1671, 11767), (1681, 11697), (3899, 5043)]