18710680

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2801}}^1$

素因数の和:2979

約数の個数: 32

約数和(自身を含む): 42366240

約数和(自身を除く): 23655560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 2801, 3340, 5602, 6680, 11204, 14005, 22408, 28010, 56020, 112040, 467767, 935534, 1871068, 2338835, 3742136, 4677670, 9355340, 18710680]

約数ペア:

[(1, 18710680), (2, 9355340), (4, 4677670), (5, 3742136), (8, 2338835), (10, 1871068), (20, 935534), (40, 467767), (167, 112040), (334, 56020), (668, 28010), (835, 22408), (1336, 14005), (1670, 11204), (2801, 6680), (3340, 5602)]