21131866

素因数分解:

$2^1\times 7^1\times {\mathrm{1171}}^1\times {\mathrm{1289}}^1$

素因数の和:2469

約数の個数: 16

約数和(自身を含む): 36285120

約数和(自身を除く): 15153254

約数列:

[1, 2, 7, 14, 1171, 1289, 2342, 2578, 8197, 9023, 16394, 18046, 1509419, 3018838, 10565933, 21131866]

約数ペア:

[(1, 21131866), (2, 10565933), (7, 3018838), (14, 1509419), (1171, 18046), (1289, 16394), (2342, 9023), (2578, 8197)]