21240807

素因数分解:

$3^1\times 7^1\times {\mathrm{823}}^1\times {\mathrm{1229}}^1$

素因数の和:2062

約数の個数: 16

約数和(自身を含む): 32432640

約数和(自身を除く): 11191833

約数列:

[1, 3, 7, 21, 823, 1229, 2469, 3687, 5761, 8603, 17283, 25809, 1011467, 3034401, 7080269, 21240807]

約数ペア:

[(1, 21240807), (3, 7080269), (7, 3034401), (21, 1011467), (823, 25809), (1229, 17283), (2469, 8603), (3687, 5761)]