81966665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{78437}}^1$

素因数の和:78472

約数の個数: 16

約数和(自身を含む): 112950720

約数和(自身を除く): 30984055

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 78437, 392185, 862807, 1490303, 4314035, 7451515, 16393333, 81966665]

約数ペア:

[(1, 81966665), (5, 16393333), (11, 7451515), (19, 4314035), (55, 1490303), (95, 862807), (209, 392185), (1045, 78437)]