20408283

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7901}}^1$

素因数の和:7955

約数の個数: 24

約数和(自身を含む): 34515936

約数和(自身を除く): 14107653

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 7901, 23703, 55307, 71109, 165921, 323941, 497763, 971823, 2267587, 2915469, 6802761, 20408283]

約数ペア:

[(1, 20408283), (3, 6802761), (7, 2915469), (9, 2267587), (21, 971823), (41, 497763), (63, 323941), (123, 165921), (287, 71109), (369, 55307), (861, 23703), (2583, 7901)]