21561200

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2837}}^1$

素因数の和:2874

約数の個数: 60

約数和(自身を含む): 54546360

約数和(自身を除く): 32985160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2837, 3800, 5674, 7600, 11348, 14185, 22696, 28370, 45392, 53903, 56740, 70925, 107806, 113480, 141850, 215612, 226960, 269515, 283700, 431224, 539030, 567400, 862448, 1078060, 1134800, 1347575, 2156120, 2695150, 4312240, 5390300, 10780600, 21561200]

約数ペア:

[(1, 21561200), (2, 10780600), (4, 5390300), (5, 4312240), (8, 2695150), (10, 2156120), (16, 1347575), (19, 1134800), (20, 1078060), (25, 862448), (38, 567400), (40, 539030), (50, 431224), (76, 283700), (80, 269515), (95, 226960), (100, 215612), (152, 141850), (190, 113480), (200, 107806), (304, 70925), (380, 56740), (400, 53903), (475, 45392), (760, 28370), (950, 22696), (1520, 14185), (1900, 11348), (2837, 7600), (3800, 5674)]