21379984

素因数分解:

$2^4\times {\mathrm{239}}^1\times {\mathrm{5591}}^1$

素因数の和:5838

約数の個数: 20

約数和(自身を含む): 41604480

約数和(自身を除く): 20224496

約数列:

[1, 2, 4, 8, 16, 239, 478, 956, 1912, 3824, 5591, 11182, 22364, 44728, 89456, 1336249, 2672498, 5344996, 10689992, 21379984]

約数ペア:

[(1, 21379984), (2, 10689992), (4, 5344996), (8, 2672498), (16, 1336249), (239, 89456), (478, 44728), (956, 22364), (1912, 11182), (3824, 5591)]