16671640

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2557}}^1$

素因数の和:2731

約数の個数: 32

約数和(自身を含む): 37756080

約数和(自身を除く): 21084440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 2557, 3260, 5114, 6520, 10228, 12785, 20456, 25570, 51140, 102280, 416791, 833582, 1667164, 2083955, 3334328, 4167910, 8335820, 16671640]

約数ペア:

[(1, 16671640), (2, 8335820), (4, 4167910), (5, 3334328), (8, 2083955), (10, 1667164), (20, 833582), (40, 416791), (163, 102280), (326, 51140), (652, 25570), (815, 20456), (1304, 12785), (1630, 10228), (2557, 6520), (3260, 5114)]