21017883

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{6481}}^1$

素因数の和:6554

約数の個数: 16

約数和(自身を含む): 29869056

約数和(自身を除く): 8851173

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 6481, 19443, 149063, 304607, 447189, 913821, 7005961, 21017883]

約数ペア:

[(1, 21017883), (3, 7005961), (23, 913821), (47, 447189), (69, 304607), (141, 149063), (1081, 19443), (3243, 6481)]