66467480

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3947}}^1$

素因数の和:4379

約数の個数: 32

約数和(自身を含む): 149945040

約数和(自身を除く): 83477560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 3947, 4210, 7894, 8420, 15788, 16840, 19735, 31576, 39470, 78940, 157880, 1661687, 3323374, 6646748, 8308435, 13293496, 16616870, 33233740, 66467480]

約数ペア:

[(1, 66467480), (2, 33233740), (4, 16616870), (5, 13293496), (8, 8308435), (10, 6646748), (20, 3323374), (40, 1661687), (421, 157880), (842, 78940), (1684, 39470), (2105, 31576), (3368, 19735), (3947, 16840), (4210, 15788), (7894, 8420)]