18257985

素因数分解:

$3^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{643}}^1$

素因数の和:1285

約数の個数: 24

約数和(自身を含む): 31746624

約数和(自身を除く): 13488639

約数列:

[1, 3, 5, 9, 15, 45, 631, 643, 1893, 1929, 3155, 3215, 5679, 5787, 9465, 9645, 28395, 28935, 405733, 1217199, 2028665, 3651597, 6085995, 18257985]

約数ペア:

[(1, 18257985), (3, 6085995), (5, 3651597), (9, 2028665), (15, 1217199), (45, 405733), (631, 28935), (643, 28395), (1893, 9645), (1929, 9465), (3155, 5787), (3215, 5679)]