20285680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5897}}^1$

素因数の和:5953

約数の個数: 40

約数和(自身を含む): 48269232

約数和(自身を除く): 27983552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5897, 11794, 23588, 29485, 47176, 58970, 94352, 117940, 235880, 253571, 471760, 507142, 1014284, 1267855, 2028568, 2535710, 4057136, 5071420, 10142840, 20285680]

約数ペア:

[(1, 20285680), (2, 10142840), (4, 5071420), (5, 4057136), (8, 2535710), (10, 2028568), (16, 1267855), (20, 1014284), (40, 507142), (43, 471760), (80, 253571), (86, 235880), (172, 117940), (215, 94352), (344, 58970), (430, 47176), (688, 29485), (860, 23588), (1720, 11794), (3440, 5897)]