20804725431

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1\times {\mathrm{25153}}^1$

素因数の和:25876

約数の個数: 48

約数和(自身を含む): 36205661440

約数和(自身を除く): 15400936009

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 691, 1197, 2073, 4837, 6219, 13129, 14511, 25153, 39387, 43533, 75459, 91903, 118161, 176071, 226377, 275709, 477907, 528213, 827127, 1433721, 1584639, 3345349, 4301163, 10036047, 17380723, 30108141, 52142169, 121665061, 156426507, 330233737, 364995183, 990701211, 1094985549, 2311636159, 2972103633, 6934908477, 20804725431]

約数ペア:

[(1, 20804725431), (3, 6934908477), (7, 2972103633), (9, 2311636159), (19, 1094985549), (21, 990701211), (57, 364995183), (63, 330233737), (133, 156426507), (171, 121665061), (399, 52142169), (691, 30108141), (1197, 17380723), (2073, 10036047), (4837, 4301163), (6219, 3345349), (13129, 1584639), (14511, 1433721), (25153, 827127), (39387, 528213), (43533, 477907), (75459, 275709), (91903, 226377), (118161, 176071)]