21900625

素因数分解:

$5^4\times {\mathrm{67}}^1\times {\mathrm{523}}^1$

素因数の和:610

約数の個数: 20

約数和(自身を含む): 27828592

約数和(自身を除く): 5927967

約数列:

[1, 5, 25, 67, 125, 335, 523, 625, 1675, 2615, 8375, 13075, 35041, 41875, 65375, 175205, 326875, 876025, 4380125, 21900625]

約数ペア:

[(1, 21900625), (5, 4380125), (25, 876025), (67, 326875), (125, 175205), (335, 65375), (523, 41875), (625, 35041), (1675, 13075), (2615, 8375)]