20464881

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{7639}}^1$

素因数の和:7708

約数の個数: 16

約数和(自身を含む): 29337600

約数和(自身を除く): 8872719

約数列:

[1, 3, 19, 47, 57, 141, 893, 2679, 7639, 22917, 145141, 359033, 435423, 1077099, 6821627, 20464881]

約数ペア:

[(1, 20464881), (3, 6821627), (19, 1077099), (47, 435423), (57, 359033), (141, 145141), (893, 22917), (2679, 7639)]