81065960

素因数分解:

$2^3\times 5^1\times {\mathrm{479}}^1\times {\mathrm{4231}}^1$

素因数の和:4721

約数の個数: 32

約数和(自身を含む): 182822400

約数和(自身を除く): 101756440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 479, 958, 1916, 2395, 3832, 4231, 4790, 8462, 9580, 16924, 19160, 21155, 33848, 42310, 84620, 169240, 2026649, 4053298, 8106596, 10133245, 16213192, 20266490, 40532980, 81065960]

約数ペア:

[(1, 81065960), (2, 40532980), (4, 20266490), (5, 16213192), (8, 10133245), (10, 8106596), (20, 4053298), (40, 2026649), (479, 169240), (958, 84620), (1916, 42310), (2395, 33848), (3832, 21155), (4231, 19160), (4790, 16924), (8462, 9580)]