21250871860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{197609}}^1$

素因数の和:197920

約数の個数: 48

約数和(自身を含む): 47141841600

約数和(自身を除く): 25890969740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 283, 380, 566, 1132, 1415, 2830, 5377, 5660, 10754, 21508, 26885, 53770, 107540, 197609, 395218, 790436, 988045, 1976090, 3754571, 3952180, 7509142, 15018284, 18772855, 37545710, 55923347, 75091420, 111846694, 223693388, 279616735, 559233470, 1062543593, 1118466940, 2125087186, 4250174372, 5312717965, 10625435930, 21250871860]

約数ペア:

[(1, 21250871860), (2, 10625435930), (4, 5312717965), (5, 4250174372), (10, 2125087186), (19, 1118466940), (20, 1062543593), (38, 559233470), (76, 279616735), (95, 223693388), (190, 111846694), (283, 75091420), (380, 55923347), (566, 37545710), (1132, 18772855), (1415, 15018284), (2830, 7509142), (5377, 3952180), (5660, 3754571), (10754, 1976090), (21508, 988045), (26885, 790436), (53770, 395218), (107540, 197609)]