21840075

素因数分解:

$3^2\times 5^2\times {\mathrm{113}}^1\times {\mathrm{859}}^1$

素因数の和:988

約数の個数: 36

約数和(自身を含む): 39510120

約数和(自身を除く): 17670045

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 113, 225, 339, 565, 859, 1017, 1695, 2577, 2825, 4295, 5085, 7731, 8475, 12885, 21475, 25425, 38655, 64425, 97067, 193275, 291201, 485335, 873603, 1456005, 2426675, 4368015, 7280025, 21840075]

約数ペア:

[(1, 21840075), (3, 7280025), (5, 4368015), (9, 2426675), (15, 1456005), (25, 873603), (45, 485335), (75, 291201), (113, 193275), (225, 97067), (339, 64425), (565, 38655), (859, 25425), (1017, 21475), (1695, 12885), (2577, 8475), (2825, 7731), (4295, 5085)]