20491107

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1597}}^1$

素因数の和:1667

約数の個数: 32

約数和(自身を含む): 34363392

約数和(自身を除く): 13872285

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 141, 273, 329, 611, 987, 1597, 1833, 4277, 4791, 11179, 12831, 20761, 33537, 62283, 75059, 145327, 225177, 435981, 525413, 975767, 1576239, 2927301, 6830369, 20491107]

約数ペア:

[(1, 20491107), (3, 6830369), (7, 2927301), (13, 1576239), (21, 975767), (39, 525413), (47, 435981), (91, 225177), (141, 145327), (273, 75059), (329, 62283), (611, 33537), (987, 20761), (1597, 12831), (1833, 11179), (4277, 4791)]