21302475

素因数分解:

$3^1\times 5^2\times {\mathrm{439}}^1\times {\mathrm{647}}^1$

素因数の和:1099

約数の個数: 24

約数和(自身を含む): 35354880

約数和(自身を除く): 14052405

約数列:

[1, 3, 5, 15, 25, 75, 439, 647, 1317, 1941, 2195, 3235, 6585, 9705, 10975, 16175, 32925, 48525, 284033, 852099, 1420165, 4260495, 7100825, 21302475]

約数ペア:

[(1, 21302475), (3, 7100825), (5, 4260495), (15, 1420165), (25, 852099), (75, 284033), (439, 48525), (647, 32925), (1317, 16175), (1941, 10975), (2195, 9705), (3235, 6585)]