20377520

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2473}}^1$

素因数の和:2589

約数の個数: 40

約数和(自身を含む): 47857056

約数和(自身を除く): 27479536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2473, 4120, 4946, 8240, 9892, 12365, 19784, 24730, 39568, 49460, 98920, 197840, 254719, 509438, 1018876, 1273595, 2037752, 2547190, 4075504, 5094380, 10188760, 20377520]

約数ペア:

[(1, 20377520), (2, 10188760), (4, 5094380), (5, 4075504), (8, 2547190), (10, 2037752), (16, 1273595), (20, 1018876), (40, 509438), (80, 254719), (103, 197840), (206, 98920), (412, 49460), (515, 39568), (824, 24730), (1030, 19784), (1648, 12365), (2060, 9892), (2473, 8240), (4120, 4946)]