20796950

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 41983920

約数和(自身を除く): 21186970

約数列:

[1, 2, 5, 10, 17, 25, 34, 43, 50, 85, 86, 170, 215, 425, 430, 569, 731, 850, 1075, 1138, 1462, 2150, 2845, 3655, 5690, 7310, 9673, 14225, 18275, 19346, 24467, 28450, 36550, 48365, 48934, 96730, 122335, 241825, 244670, 415939, 483650, 611675, 831878, 1223350, 2079695, 4159390, 10398475, 20796950]

約数ペア:

[(1, 20796950), (2, 10398475), (5, 4159390), (10, 2079695), (17, 1223350), (25, 831878), (34, 611675), (43, 483650), (50, 415939), (85, 244670), (86, 241825), (170, 122335), (215, 96730), (425, 48934), (430, 48365), (569, 36550), (731, 28450), (850, 24467), (1075, 19346), (1138, 18275), (1462, 14225), (2150, 9673), (2845, 7310), (3655, 5690)]