20955389

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 26697888

約数和(自身を除く): 5742499

約数列:

[1, 7, 13, 49, 67, 91, 469, 491, 637, 871, 3283, 3437, 6097, 6383, 24059, 32897, 42679, 44681, 230279, 312767, 427661, 1611953, 2993627, 20955389]

約数ペア:

[(1, 20955389), (7, 2993627), (13, 1611953), (49, 427661), (67, 312767), (91, 230279), (469, 44681), (491, 42679), (637, 32897), (871, 24059), (3283, 6383), (3437, 6097)]