21187040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18917}}^1$

素因数の和:18939

約数の個数: 48

約数和(自身を含む): 57208032

約数和(自身を除く): 36020992

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18917, 37834, 75668, 94585, 132419, 151336, 189170, 264838, 302672, 378340, 529676, 605344, 662095, 756680, 1059352, 1324190, 1513360, 2118704, 2648380, 3026720, 4237408, 5296760, 10593520, 21187040]

約数ペア:

[(1, 21187040), (2, 10593520), (4, 5296760), (5, 4237408), (7, 3026720), (8, 2648380), (10, 2118704), (14, 1513360), (16, 1324190), (20, 1059352), (28, 756680), (32, 662095), (35, 605344), (40, 529676), (56, 378340), (70, 302672), (80, 264838), (112, 189170), (140, 151336), (160, 132419), (224, 94585), (280, 75668), (560, 37834), (1120, 18917)]