21333561

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{1553}}^1$

素因数の和:1816

約数の個数: 16

約数和(自身を含む): 30085440

約数和(自身を除く): 8751879

約数列:

[1, 3, 19, 57, 241, 723, 1553, 4579, 4659, 13737, 29507, 88521, 374273, 1122819, 7111187, 21333561]

約数ペア:

[(1, 21333561), (3, 7111187), (19, 1122819), (57, 374273), (241, 88521), (723, 29507), (1553, 13737), (4579, 4659)]