721000345

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{4003}}^1$

素因数の和:4201

約数の個数: 32

約数和(自身を含む): 992863872

約数和(自身を除く): 271863527

約数列:

[1, 5, 13, 17, 65, 85, 163, 221, 815, 1105, 2119, 2771, 4003, 10595, 13855, 20015, 36023, 52039, 68051, 180115, 260195, 340255, 652489, 884663, 3262445, 4423315, 8482357, 11092313, 42411785, 55461565, 144200069, 721000345]

約数ペア:

[(1, 721000345), (5, 144200069), (13, 55461565), (17, 42411785), (65, 11092313), (85, 8482357), (163, 4423315), (221, 3262445), (815, 884663), (1105, 652489), (2119, 340255), (2771, 260195), (4003, 180115), (10595, 68051), (13855, 52039), (20015, 36023)]