21404572

素因数分解:

$2^2\times 7^3\times {\mathrm{15601}}^1$

素因数の和:15626

約数の個数: 24

約数和(自身を含む): 43685600

約数和(自身を除く): 22281028

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 15601, 31202, 62404, 109207, 218414, 436828, 764449, 1528898, 3057796, 5351143, 10702286, 21404572]

約数ペア:

[(1, 21404572), (2, 10702286), (4, 5351143), (7, 3057796), (14, 1528898), (28, 764449), (49, 436828), (98, 218414), (196, 109207), (343, 62404), (686, 31202), (1372, 15601)]