21251325

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6911}}^1$

素因数の和:6965

約数の個数: 24

約数和(自身を含む): 35997696

約数和(自身を除く): 14746371

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 6911, 20733, 34555, 103665, 172775, 283351, 518325, 850053, 1416755, 4250265, 7083775, 21251325]

約数ペア:

[(1, 21251325), (3, 7083775), (5, 4250265), (15, 1416755), (25, 850053), (41, 518325), (75, 283351), (123, 172775), (205, 103665), (615, 34555), (1025, 20733), (3075, 6911)]