28165660

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{2137}}^1$

素因数の和:2805

約数の個数: 24

約数和(自身を含む): 59265360

約数和(自身を除く): 31099700

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 2137, 2636, 3295, 4274, 6590, 8548, 10685, 13180, 21370, 42740, 1408283, 2816566, 5633132, 7041415, 14082830, 28165660]

約数ペア:

[(1, 28165660), (2, 14082830), (4, 7041415), (5, 5633132), (10, 2816566), (20, 1408283), (659, 42740), (1318, 21370), (2137, 13180), (2636, 10685), (3295, 8548), (4274, 6590)]