20705660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60899}}^1$

素因数の和:60925

約数の個数: 24

約数和(自身を含む): 46040400

約数和(自身を除く): 25334740

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60899, 121798, 243596, 304495, 608990, 1035283, 1217980, 2070566, 4141132, 5176415, 10352830, 20705660]

約数ペア:

[(1, 20705660), (2, 10352830), (4, 5176415), (5, 4141132), (10, 2070566), (17, 1217980), (20, 1035283), (34, 608990), (68, 304495), (85, 243596), (170, 121798), (340, 60899)]