21565875

素因数分解:

$3^1\times 5^3\times {\mathrm{131}}^1\times {\mathrm{439}}^1$

素因数の和:588

約数の個数: 32

約数和(自身を含む): 36241920

約数和(自身を除く): 14676045

約数列:

[1, 3, 5, 15, 25, 75, 125, 131, 375, 393, 439, 655, 1317, 1965, 2195, 3275, 6585, 9825, 10975, 16375, 32925, 49125, 54875, 57509, 164625, 172527, 287545, 862635, 1437725, 4313175, 7188625, 21565875]

約数ペア:

[(1, 21565875), (3, 7188625), (5, 4313175), (15, 1437725), (25, 862635), (75, 287545), (125, 172527), (131, 164625), (375, 57509), (393, 54875), (439, 49125), (655, 32925), (1317, 16375), (1965, 10975), (2195, 9825), (3275, 6585)]