20806340

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{1237}}^1$

素因数の和:1304

約数の個数: 36

約数和(自身を含む): 45288516

約数和(自身を除く): 24482176

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 841, 1237, 1682, 2474, 3364, 4205, 4948, 6185, 8410, 12370, 16820, 24740, 35873, 71746, 143492, 179365, 358730, 717460, 1040317, 2080634, 4161268, 5201585, 10403170, 20806340]

約数ペア:

[(1, 20806340), (2, 10403170), (4, 5201585), (5, 4161268), (10, 2080634), (20, 1040317), (29, 717460), (58, 358730), (116, 179365), (145, 143492), (290, 71746), (580, 35873), (841, 24740), (1237, 16820), (1682, 12370), (2474, 8410), (3364, 6185), (4205, 4948)]