20640888

素因数分解:

$2^3\times 3^2\times {\mathrm{283}}^1\times {\mathrm{1013}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 56155320

約数和(自身を除く): 35514432

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 283, 566, 849, 1013, 1132, 1698, 2026, 2264, 2547, 3039, 3396, 4052, 5094, 6078, 6792, 8104, 9117, 10188, 12156, 18234, 20376, 24312, 36468, 72936, 286679, 573358, 860037, 1146716, 1720074, 2293432, 2580111, 3440148, 5160222, 6880296, 10320444, 20640888]

約数ペア:

[(1, 20640888), (2, 10320444), (3, 6880296), (4, 5160222), (6, 3440148), (8, 2580111), (9, 2293432), (12, 1720074), (18, 1146716), (24, 860037), (36, 573358), (72, 286679), (283, 72936), (566, 36468), (849, 24312), (1013, 20376), (1132, 18234), (1698, 12156), (2026, 10188), (2264, 9117), (2547, 8104), (3039, 6792), (3396, 6078), (4052, 5094)]