20639486

素因数分解:

$2^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{4481}}^1$

素因数の和:4544

約数の個数: 24

約数和(自身を含む): 36788256

約数和(自身を除く): 16148770

約数列:

[1, 2, 7, 14, 47, 49, 94, 98, 329, 658, 2303, 4481, 4606, 8962, 31367, 62734, 210607, 219569, 421214, 439138, 1474249, 2948498, 10319743, 20639486]

約数ペア:

[(1, 20639486), (2, 10319743), (7, 2948498), (14, 1474249), (47, 439138), (49, 421214), (94, 219569), (98, 210607), (329, 62734), (658, 31367), (2303, 8962), (4481, 4606)]