389905125

素因数分解:

$3^1\times 5^3\times {\mathrm{131}}^1\times {\mathrm{7937}}^1$

素因数の和:8086

約数の個数: 32

約数和(自身を含む): 653837184

約数和(自身を除く): 263932059

約数列:

[1, 3, 5, 15, 25, 75, 125, 131, 375, 393, 655, 1965, 3275, 7937, 9825, 16375, 23811, 39685, 49125, 119055, 198425, 595275, 992125, 1039747, 2976375, 3119241, 5198735, 15596205, 25993675, 77981025, 129968375, 389905125]

約数ペア:

[(1, 389905125), (3, 129968375), (5, 77981025), (15, 25993675), (25, 15596205), (75, 5198735), (125, 3119241), (131, 2976375), (375, 1039747), (393, 992125), (655, 595275), (1965, 198425), (3275, 119055), (7937, 49125), (9825, 39685), (16375, 23811)]