21080038

素因数分解:

$2^1\times 7^1\times {\mathrm{523}}^1\times {\mathrm{2879}}^1$

素因数の和:3411

約数の個数: 16

約数和(自身を含む): 36218880

約数和(自身を除く): 15138842

約数列:

[1, 2, 7, 14, 523, 1046, 2879, 3661, 5758, 7322, 20153, 40306, 1505717, 3011434, 10540019, 21080038]

約数ペア:

[(1, 21080038), (2, 10540019), (7, 3011434), (14, 1505717), (523, 40306), (1046, 20153), (2879, 7322), (3661, 5758)]