21071791

素因数分解:

${\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{331}}^1$

素因数の和:486

約数の個数: 16

約数和(自身を含む): 23425920

約数和(自身を除く): 2354129

約数列:

[1, 13, 59, 83, 331, 767, 1079, 4303, 4897, 19529, 27473, 63661, 253877, 357149, 1620907, 21071791]

約数ペア:

[(1, 21071791), (13, 1620907), (59, 357149), (83, 253877), (331, 63661), (767, 27473), (1079, 19529), (4303, 4897)]