90864680

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{3511}}^1$

素因数の和:4169

約数の個数: 32

約数和(自身を含む): 204819840

約数和(自身を除く): 113955160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 3511, 5176, 6470, 7022, 12940, 14044, 17555, 25880, 28088, 35110, 70220, 140440, 2271617, 4543234, 9086468, 11358085, 18172936, 22716170, 45432340, 90864680]

約数ペア:

[(1, 90864680), (2, 45432340), (4, 22716170), (5, 18172936), (8, 11358085), (10, 9086468), (20, 4543234), (40, 2271617), (647, 140440), (1294, 70220), (2588, 35110), (3235, 28088), (3511, 25880), (5176, 17555), (6470, 14044), (7022, 12940)]