21080108

素因数分解:

$2^2\times 7^1\times {\mathrm{752861}}^1$

素因数の和:752872

約数の個数: 12

約数和(自身を含む): 42160272

約数和(自身を除く): 21080164

約数列:

[1, 2, 4, 7, 14, 28, 752861, 1505722, 3011444, 5270027, 10540054, 21080108]

約数ペア:

[(1, 21080108), (2, 10540054), (4, 5270027), (7, 3011444), (14, 1505722), (28, 752861)]