20654315145

素因数分解:

$3^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{198437}}^1$

素因数の和:198711

約数の個数: 40

約数和(自身を含む): 37169024904

約数和(自身を除く): 16514709759

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 257, 405, 771, 1285, 2313, 3855, 6939, 11565, 20817, 34695, 104085, 198437, 595311, 992185, 1785933, 2976555, 5357799, 8929665, 16073397, 26788995, 50998309, 80366985, 152994927, 254991545, 458984781, 764974635, 1376954343, 2294923905, 4130863029, 6884771715, 20654315145]

約数ペア:

[(1, 20654315145), (3, 6884771715), (5, 4130863029), (9, 2294923905), (15, 1376954343), (27, 764974635), (45, 458984781), (81, 254991545), (135, 152994927), (257, 80366985), (405, 50998309), (771, 26788995), (1285, 16073397), (2313, 8929665), (3855, 5357799), (6939, 2976555), (11565, 1785933), (20817, 992185), (34695, 595311), (104085, 198437)]