20710125

素因数分解:

$3^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 38329200

約数和(自身を除く): 17619075

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 125, 205, 225, 369, 375, 449, 615, 1025, 1125, 1347, 1845, 2245, 3075, 4041, 5125, 6735, 9225, 11225, 15375, 18409, 20205, 33675, 46125, 55227, 56125, 92045, 101025, 165681, 168375, 276135, 460225, 505125, 828405, 1380675, 2301125, 4142025, 6903375, 20710125]

約数ペア:

[(1, 20710125), (3, 6903375), (5, 4142025), (9, 2301125), (15, 1380675), (25, 828405), (41, 505125), (45, 460225), (75, 276135), (123, 168375), (125, 165681), (205, 101025), (225, 92045), (369, 56125), (375, 55227), (449, 46125), (615, 33675), (1025, 20205), (1125, 18409), (1347, 15375), (1845, 11225), (2245, 9225), (3075, 6735), (4041, 5125)]