21390334

素因数分解:

$2^1\times 7^1\times {\mathrm{821}}^1\times {\mathrm{1861}}^1$

素因数の和:2691

約数の個数: 16

約数和(自身を含む): 36733536

約数和(自身を除く): 15343202

約数列:

[1, 2, 7, 14, 821, 1642, 1861, 3722, 5747, 11494, 13027, 26054, 1527881, 3055762, 10695167, 21390334]

約数ペア:

[(1, 21390334), (2, 10695167), (7, 3055762), (14, 1527881), (821, 26054), (1642, 13027), (1861, 11494), (3722, 5747)]