21489675

素因数分解:

$3^1\times 5^2\times {\mathrm{349}}^1\times {\mathrm{821}}^1$

素因数の和:1183

約数の個数: 24

約数和(自身を含む): 35674800

約数和(自身を除く): 14185125

約数列:

[1, 3, 5, 15, 25, 75, 349, 821, 1047, 1745, 2463, 4105, 5235, 8725, 12315, 20525, 26175, 61575, 286529, 859587, 1432645, 4297935, 7163225, 21489675]

約数ペア:

[(1, 21489675), (3, 7163225), (5, 4297935), (15, 1432645), (25, 859587), (75, 286529), (349, 61575), (821, 26175), (1047, 20525), (1745, 12315), (2463, 8725), (4105, 5235)]