18989945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{463}}^1\times {\mathrm{631}}^1$

素因数の和:1112

約数の個数: 16

約数和(自身を含む): 24632832

約数和(自身を除く): 5642887

約数列:

[1, 5, 13, 65, 463, 631, 2315, 3155, 6019, 8203, 30095, 41015, 292153, 1460765, 3797989, 18989945]

約数ペア:

[(1, 18989945), (5, 3797989), (13, 1460765), (65, 292153), (463, 41015), (631, 30095), (2315, 8203), (3155, 6019)]