12838220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9041}}^1$

素因数の和:9121

約数の個数: 24

約数和(自身を含む): 27343008

約数和(自身を除く): 14504788

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 9041, 18082, 36164, 45205, 90410, 180820, 641911, 1283822, 2567644, 3209555, 6419110, 12838220]

約数ペア:

[(1, 12838220), (2, 6419110), (4, 3209555), (5, 2567644), (10, 1283822), (20, 641911), (71, 180820), (142, 90410), (284, 45205), (355, 36164), (710, 18082), (1420, 9041)]