64999240

素因数分解:

$2^3\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{1447}}^1$

素因数の和:2581

約数の個数: 32

約数和(自身を含む): 146479680

約数和(自身を除く): 81480440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1123, 1447, 2246, 2894, 4492, 5615, 5788, 7235, 8984, 11230, 11576, 14470, 22460, 28940, 44920, 57880, 1624981, 3249962, 6499924, 8124905, 12999848, 16249810, 32499620, 64999240]

約数ペア:

[(1, 64999240), (2, 32499620), (4, 16249810), (5, 12999848), (8, 8124905), (10, 6499924), (20, 3249962), (40, 1624981), (1123, 57880), (1447, 44920), (2246, 28940), (2894, 22460), (4492, 14470), (5615, 11576), (5788, 11230), (7235, 8984)]