20981324

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{57641}}^1$

素因数の和:57665

約数の個数: 24

約数和(自身を含む): 45191328

約数和(自身を除く): 24210004

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 57641, 115282, 230564, 403487, 749333, 806974, 1498666, 1613948, 2997332, 5245331, 10490662, 20981324]

約数ペア:

[(1, 20981324), (2, 10490662), (4, 5245331), (7, 2997332), (13, 1613948), (14, 1498666), (26, 806974), (28, 749333), (52, 403487), (91, 230564), (182, 115282), (364, 57641)]