128716990

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{32099}}^1$

素因数の和:32507

約数の個数: 16

約数和(自身を含む): 232275600

約数和(自身を除く): 103558610

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 32099, 64198, 160495, 320990, 12871699, 25743398, 64358495, 128716990]

約数ペア:

[(1, 128716990), (2, 64358495), (5, 25743398), (10, 12871699), (401, 320990), (802, 160495), (2005, 64198), (4010, 32099)]