21258213

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1\times {\mathrm{431}}^1$

素因数の和:876

約数の個数: 16

約数和(自身を含む): 29175552

約数和(自身を除く): 7917339

約数列:

[1, 3, 41, 123, 401, 431, 1203, 1293, 16441, 17671, 49323, 53013, 172831, 518493, 7086071, 21258213]

約数ペア:

[(1, 21258213), (3, 7086071), (41, 518493), (123, 172831), (401, 53013), (431, 49323), (1203, 17671), (1293, 16441)]