21531375

素因数分解:

$3^2\times 5^3\times {\mathrm{19139}}^1$

素因数の和:19160

約数の個数: 24

約数和(自身を含む): 38815920

約数和(自身を除く): 17284545

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 19139, 57417, 95695, 172251, 287085, 478475, 861255, 1435425, 2392375, 4306275, 7177125, 21531375]

約数ペア:

[(1, 21531375), (3, 7177125), (5, 4306275), (9, 2392375), (15, 1435425), (25, 861255), (45, 478475), (75, 287085), (125, 172251), (225, 95695), (375, 57417), (1125, 19139)]