21540375

素因数分解:

$3^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{467}}^1$

素因数の和:529

約数の個数: 48

約数和(自身を含む): 39862368

約数和(自身を除く): 18321993

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 125, 205, 225, 369, 375, 467, 615, 1025, 1125, 1401, 1845, 2335, 3075, 4203, 5125, 7005, 9225, 11675, 15375, 19147, 21015, 35025, 46125, 57441, 58375, 95735, 105075, 172323, 175125, 287205, 478675, 525375, 861615, 1436025, 2393375, 4308075, 7180125, 21540375]

約数ペア:

[(1, 21540375), (3, 7180125), (5, 4308075), (9, 2393375), (15, 1436025), (25, 861615), (41, 525375), (45, 478675), (75, 287205), (123, 175125), (125, 172323), (205, 105075), (225, 95735), (369, 58375), (375, 57441), (467, 46125), (615, 35025), (1025, 21015), (1125, 19147), (1401, 15375), (1845, 11675), (2335, 9225), (3075, 7005), (4203, 5125)]