71872180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{87649}}^1$

素因数の和:87699

約数の個数: 24

約数和(自身を含む): 154614600

約数和(自身を除く): 82742420

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 87649, 175298, 350596, 438245, 876490, 1752980, 3593609, 7187218, 14374436, 17968045, 35936090, 71872180]

約数ペア:

[(1, 71872180), (2, 35936090), (4, 17968045), (5, 14374436), (10, 7187218), (20, 3593609), (41, 1752980), (82, 876490), (164, 438245), (205, 350596), (410, 175298), (820, 87649)]