21270890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29959}}^1$

素因数の和:30037

約数の個数: 16

約数和(自身を含む): 38828160

約数和(自身を除く): 17557270

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29959, 59918, 149795, 299590, 2127089, 4254178, 10635445, 21270890]

約数ペア:

[(1, 21270890), (2, 10635445), (5, 4254178), (10, 2127089), (71, 299590), (142, 149795), (355, 59918), (710, 29959)]