20761799560

素因数分解:

$2^3\times 5^1\times {\mathrm{1307}}^1\times {\mathrm{397127}}^1$

素因数の和:398445

約数の個数: 32

約数和(自身を含む): 46749908160

約数和(自身を除く): 25988108600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1307, 2614, 5228, 6535, 10456, 13070, 26140, 52280, 397127, 794254, 1588508, 1985635, 3177016, 3971270, 7942540, 15885080, 519044989, 1038089978, 2076179956, 2595224945, 4152359912, 5190449890, 10380899780, 20761799560]

約数ペア:

[(1, 20761799560), (2, 10380899780), (4, 5190449890), (5, 4152359912), (8, 2595224945), (10, 2076179956), (20, 1038089978), (40, 519044989), (1307, 15885080), (2614, 7942540), (5228, 3971270), (6535, 3177016), (10456, 1985635), (13070, 1588508), (26140, 794254), (52280, 397127)]