12487480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4397}}^1$

素因数の和:4479

約数の個数: 32

約数和(自身を含む): 28499040

約数和(自身を除く): 16011560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4397, 8794, 17588, 21985, 35176, 43970, 87940, 175880, 312187, 624374, 1248748, 1560935, 2497496, 3121870, 6243740, 12487480]

約数ペア:

[(1, 12487480), (2, 6243740), (4, 3121870), (5, 2497496), (8, 1560935), (10, 1248748), (20, 624374), (40, 312187), (71, 175880), (142, 87940), (284, 43970), (355, 35176), (568, 21985), (710, 17588), (1420, 8794), (2840, 4397)]