20907271

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:595

約数の個数: 24

約数和(自身を含む): 26922240

約数和(自身を除く): 6014969

約数列:

[1, 7, 11, 49, 77, 79, 491, 539, 553, 869, 3437, 3871, 5401, 6083, 24059, 37807, 38789, 42581, 264649, 271523, 426679, 1900661, 2986753, 20907271]

約数ペア:

[(1, 20907271), (7, 2986753), (11, 1900661), (49, 426679), (77, 271523), (79, 264649), (491, 42581), (539, 38789), (553, 37807), (869, 24059), (3437, 6083), (3871, 5401)]