20786608

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{677}}^1$

素因数の和:805

約数の個数: 40

約数和(自身を含む): 42876720

約数和(自身を除く): 22090112

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 101, 152, 202, 304, 404, 677, 808, 1354, 1616, 1919, 2708, 3838, 5416, 7676, 10832, 12863, 15352, 25726, 30704, 51452, 68377, 102904, 136754, 205808, 273508, 547016, 1094032, 1299163, 2598326, 5196652, 10393304, 20786608]

約数ペア:

[(1, 20786608), (2, 10393304), (4, 5196652), (8, 2598326), (16, 1299163), (19, 1094032), (38, 547016), (76, 273508), (101, 205808), (152, 136754), (202, 102904), (304, 68377), (404, 51452), (677, 30704), (808, 25726), (1354, 15352), (1616, 12863), (1919, 10832), (2708, 7676), (3838, 5416)]