21951500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{1021}}^1$

素因数の和:1083

約数の個数: 48

約数和(自身を含む): 49105056

約数和(自身を除く): 27153556

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 1021, 1075, 2042, 2150, 4084, 4300, 5105, 5375, 10210, 10750, 20420, 21500, 25525, 43903, 51050, 87806, 102100, 127625, 175612, 219515, 255250, 439030, 510500, 878060, 1097575, 2195150, 4390300, 5487875, 10975750, 21951500]

約数ペア:

[(1, 21951500), (2, 10975750), (4, 5487875), (5, 4390300), (10, 2195150), (20, 1097575), (25, 878060), (43, 510500), (50, 439030), (86, 255250), (100, 219515), (125, 175612), (172, 127625), (215, 102100), (250, 87806), (430, 51050), (500, 43903), (860, 25525), (1021, 21500), (1075, 20420), (2042, 10750), (2150, 10210), (4084, 5375), (4300, 5105)]