665177980

素因数分解:

$2^2\times 5^1\times {\mathrm{2557}}^1\times {\mathrm{13007}}^1$

素因数の和:15573

約数の個数: 24

約数和(自身を含む): 1397527488

約数和(自身を除く): 732349508

約数列:

[1, 2, 4, 5, 10, 20, 2557, 5114, 10228, 12785, 13007, 25570, 26014, 51140, 52028, 65035, 130070, 260140, 33258899, 66517798, 133035596, 166294495, 332588990, 665177980]

約数ペア:

[(1, 665177980), (2, 332588990), (4, 166294495), (5, 133035596), (10, 66517798), (20, 33258899), (2557, 260140), (5114, 130070), (10228, 65035), (12785, 52028), (13007, 51140), (25570, 26014)]