28645960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{389}}^1$

素因数の和:670

約数の個数: 64

約数和(自身を含む): 74131200

約数和(自身を除く): 45485240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 263, 280, 389, 526, 778, 1052, 1315, 1556, 1841, 1945, 2104, 2630, 2723, 3112, 3682, 3890, 5260, 5446, 7364, 7780, 9205, 10520, 10892, 13615, 14728, 15560, 18410, 21784, 27230, 36820, 54460, 73640, 102307, 108920, 204614, 409228, 511535, 716149, 818456, 1023070, 1432298, 2046140, 2864596, 3580745, 4092280, 5729192, 7161490, 14322980, 28645960]

約数ペア:

[(1, 28645960), (2, 14322980), (4, 7161490), (5, 5729192), (7, 4092280), (8, 3580745), (10, 2864596), (14, 2046140), (20, 1432298), (28, 1023070), (35, 818456), (40, 716149), (56, 511535), (70, 409228), (140, 204614), (263, 108920), (280, 102307), (389, 73640), (526, 54460), (778, 36820), (1052, 27230), (1315, 21784), (1556, 18410), (1841, 15560), (1945, 14728), (2104, 13615), (2630, 10892), (2723, 10520), (3112, 9205), (3682, 7780), (3890, 7364), (5260, 5446)]