667220

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{457}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 1423464

約数和(自身を除く): 756244

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 457, 730, 914, 1460, 1828, 2285, 4570, 9140, 33361, 66722, 133444, 166805, 333610, 667220]

約数ペア:

[(1, 667220), (2, 333610), (4, 166805), (5, 133444), (10, 66722), (20, 33361), (73, 9140), (146, 4570), (292, 2285), (365, 1828), (457, 1460), (730, 914)]