20405229

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{167}}^1\times {\mathrm{241}}^1$

素因数の和:437

約数の個数: 24

約数和(自身を含む): 29760192

約数和(自身を除く): 9354963

約数列:

[1, 3, 13, 39, 167, 169, 241, 501, 507, 723, 2171, 3133, 6513, 9399, 28223, 40247, 40729, 84669, 120741, 122187, 523211, 1569633, 6801743, 20405229]

約数ペア:

[(1, 20405229), (3, 6801743), (13, 1569633), (39, 523211), (167, 122187), (169, 120741), (241, 84669), (501, 40729), (507, 40247), (723, 28223), (2171, 9399), (3133, 6513)]