21031875

素因数分解:

$3^2\times 5^4\times {\mathrm{3739}}^1$

素因数の和:3765

約数の個数: 30

約数和(自身を含む): 37972220

約数和(自身を除く): 16940345

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 625, 1125, 1875, 3739, 5625, 11217, 18695, 33651, 56085, 93475, 168255, 280425, 467375, 841275, 1402125, 2336875, 4206375, 7010625, 21031875]

約数ペア:

[(1, 21031875), (3, 7010625), (5, 4206375), (9, 2336875), (15, 1402125), (25, 841275), (45, 467375), (75, 280425), (125, 168255), (225, 93475), (375, 56085), (625, 33651), (1125, 18695), (1875, 11217), (3739, 5625)]