660790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:73

約数の個数: 48

約数和(自身を含む): 1423008

約数和(自身を除く): 762218

約数列:

[1, 2, 5, 10, 13, 17, 23, 26, 34, 46, 65, 85, 115, 130, 169, 170, 221, 230, 299, 338, 391, 442, 598, 782, 845, 1105, 1495, 1690, 1955, 2210, 2873, 2990, 3887, 3910, 5083, 5746, 7774, 10166, 14365, 19435, 25415, 28730, 38870, 50830, 66079, 132158, 330395, 660790]

約数ペア:

[(1, 660790), (2, 330395), (5, 132158), (10, 66079), (13, 50830), (17, 38870), (23, 28730), (26, 25415), (34, 19435), (46, 14365), (65, 10166), (85, 7774), (115, 5746), (130, 5083), (169, 3910), (170, 3887), (221, 2990), (230, 2873), (299, 2210), (338, 1955), (391, 1690), (442, 1495), (598, 1105), (782, 845)]