20745522040

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3731209}}^1$

素因数の和:3731359

約数の個数: 32

約数和(自身を含む): 47013246000

約数和(自身を除く): 26267723960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 3731209, 7462418, 14924836, 18656045, 29849672, 37312090, 74624180, 149248360, 518638051, 1037276102, 2074552204, 2593190255, 4149104408, 5186380510, 10372761020, 20745522040]

約数ペア:

[(1, 20745522040), (2, 10372761020), (4, 5186380510), (5, 4149104408), (8, 2593190255), (10, 2074552204), (20, 1037276102), (40, 518638051), (139, 149248360), (278, 74624180), (556, 37312090), (695, 29849672), (1112, 18656045), (1390, 14924836), (2780, 7462418), (5560, 3731209)]