20704240

素因数分解:

$2^4\times 5^1\times {\mathrm{258803}}^1$

素因数の和:258816

約数の個数: 20

約数和(自身を含む): 48137544

約数和(自身を除く): 27433304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 258803, 517606, 1035212, 1294015, 2070424, 2588030, 4140848, 5176060, 10352120, 20704240]

約数ペア:

[(1, 20704240), (2, 10352120), (4, 5176060), (5, 4140848), (8, 2588030), (10, 2070424), (16, 1294015), (20, 1035212), (40, 517606), (80, 258803)]