12711220

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2473}}^1$

素因数の和:2739

約数の個数: 24

約数和(自身を含む): 26808264

約数和(自身を除く): 14097044

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2473, 2570, 4946, 5140, 9892, 12365, 24730, 49460, 635561, 1271122, 2542244, 3177805, 6355610, 12711220]

約数ペア:

[(1, 12711220), (2, 6355610), (4, 3177805), (5, 2542244), (10, 1271122), (20, 635561), (257, 49460), (514, 24730), (1028, 12365), (1285, 9892), (2473, 5140), (2570, 4946)]