28188920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 66355200

約数和(自身を除く): 38166280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 127, 155, 179, 248, 254, 310, 358, 508, 620, 635, 716, 895, 1016, 1240, 1270, 1432, 1790, 2540, 3580, 3937, 5080, 5549, 7160, 7874, 11098, 15748, 19685, 22196, 22733, 27745, 31496, 39370, 44392, 45466, 55490, 78740, 90932, 110980, 113665, 157480, 181864, 221960, 227330, 454660, 704723, 909320, 1409446, 2818892, 3523615, 5637784, 7047230, 14094460, 28188920]

約数ペア:

[(1, 28188920), (2, 14094460), (4, 7047230), (5, 5637784), (8, 3523615), (10, 2818892), (20, 1409446), (31, 909320), (40, 704723), (62, 454660), (124, 227330), (127, 221960), (155, 181864), (179, 157480), (248, 113665), (254, 110980), (310, 90932), (358, 78740), (508, 55490), (620, 45466), (635, 44392), (716, 39370), (895, 31496), (1016, 27745), (1240, 22733), (1270, 22196), (1432, 19685), (1790, 15748), (2540, 11098), (3580, 7874), (3937, 7160), (5080, 5549)]