87965660

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{72103}}^1$

素因数の和:72173

約数の個数: 24

約数和(自身を含む): 187758816

約数和(自身を除く): 99793156

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 72103, 144206, 288412, 360515, 721030, 1442060, 4398283, 8796566, 17593132, 21991415, 43982830, 87965660]

約数ペア:

[(1, 87965660), (2, 43982830), (4, 21991415), (5, 17593132), (10, 8796566), (20, 4398283), (61, 1442060), (122, 721030), (244, 360515), (305, 288412), (610, 144206), (1220, 72103)]