20308407

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 32148480

約数和(自身を除く): 11840073

約数列:

[1, 3, 7, 21, 41, 103, 123, 229, 287, 309, 687, 721, 861, 1603, 2163, 4223, 4809, 9389, 12669, 23587, 28167, 29561, 65723, 70761, 88683, 165109, 197169, 495327, 967067, 2901201, 6769469, 20308407]

約数ペア:

[(1, 20308407), (3, 6769469), (7, 2901201), (21, 967067), (41, 495327), (103, 197169), (123, 165109), (229, 88683), (287, 70761), (309, 65723), (687, 29561), (721, 28167), (861, 23587), (1603, 12669), (2163, 9389), (4223, 4809)]