90810860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{648649}}^1$

素因数の和:648665

約数の個数: 24

約数和(自身を含む): 217946400

約数和(自身を除く): 127135540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 648649, 1297298, 2594596, 3243245, 4540543, 6486490, 9081086, 12972980, 18162172, 22702715, 45405430, 90810860]

約数ペア:

[(1, 90810860), (2, 45405430), (4, 22702715), (5, 18162172), (7, 12972980), (10, 9081086), (14, 6486490), (20, 4540543), (28, 3243245), (35, 2594596), (70, 1297298), (140, 648649)]