20945156985

素因数分解:

$3^4\times 5^1\times {\mathrm{51716437}}^1$

素因数の和:51716454

約数の個数: 20

約数和(自身を含む): 37546133988

約数和(自身を除く): 16600977003

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51716437, 155149311, 258582185, 465447933, 775746555, 1396343799, 2327239665, 4189031397, 6981718995, 20945156985]

約数ペア:

[(1, 20945156985), (3, 6981718995), (5, 4189031397), (9, 2327239665), (15, 1396343799), (27, 775746555), (45, 465447933), (81, 258582185), (135, 155149311), (405, 51716437)]