21989365

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{1097}}^1$

素因数の和:1332

約数の個数: 16

約数和(自身を含む): 27933120

約数和(自身を除く): 5943755

約数列:

[1, 5, 19, 95, 211, 1055, 1097, 4009, 5485, 20045, 20843, 104215, 231467, 1157335, 4397873, 21989365]

約数ペア:

[(1, 21989365), (5, 4397873), (19, 1157335), (95, 231467), (211, 104215), (1055, 20843), (1097, 20045), (4009, 5485)]