20407145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11969}}^1$

素因数の和:12016

約数の個数: 16

約数和(自身を含む): 27578880

約数和(自身を除く): 7171735

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11969, 59845, 131659, 371039, 658295, 1855195, 4081429, 20407145]

約数ペア:

[(1, 20407145), (5, 4081429), (11, 1855195), (31, 658295), (55, 371039), (155, 131659), (341, 59845), (1705, 11969)]