18904735

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{3823}}^1$

素因数の和:3894

約数の個数: 16

約数和(自身を含む): 24228864

約数和(自身を除く): 5324129

約数列:

[1, 5, 23, 43, 115, 215, 989, 3823, 4945, 19115, 87929, 164389, 439645, 821945, 3780947, 18904735]

約数ペア:

[(1, 18904735), (5, 3780947), (23, 821945), (43, 439645), (115, 164389), (215, 87929), (989, 19115), (3823, 4945)]