78821757

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{9001}}^1$

素因数の和:9153

約数の個数: 24

約数和(自身を含む): 131069120

約数和(自身を除く): 52247363

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 8757, 9001, 27003, 63007, 81009, 189021, 567063, 1251139, 3753417, 8757973, 11260251, 26273919, 78821757]

約数ペア:

[(1, 78821757), (3, 26273919), (7, 11260251), (9, 8757973), (21, 3753417), (63, 1251139), (139, 567063), (417, 189021), (973, 81009), (1251, 63007), (2919, 27003), (8757, 9001)]