20730040

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1231}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 46791360

約数和(自身を除く): 26061320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1231, 1684, 2105, 2462, 3368, 4210, 4924, 6155, 8420, 9848, 12310, 16840, 24620, 49240, 518251, 1036502, 2073004, 2591255, 4146008, 5182510, 10365020, 20730040]

約数ペア:

[(1, 20730040), (2, 10365020), (4, 5182510), (5, 4146008), (8, 2591255), (10, 2073004), (20, 1036502), (40, 518251), (421, 49240), (842, 24620), (1231, 16840), (1684, 12310), (2105, 9848), (2462, 8420), (3368, 6155), (4210, 4924)]