21727984

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3491}}^1$

素因数の和:3888

約数の個数: 20

約数和(自身を含む): 42218280

約数和(自身を除く): 20490296

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 3491, 6224, 6982, 13964, 27928, 55856, 1357999, 2715998, 5431996, 10863992, 21727984]

約数ペア:

[(1, 21727984), (2, 10863992), (4, 5431996), (8, 2715998), (16, 1357999), (389, 55856), (778, 27928), (1556, 13964), (3112, 6982), (3491, 6224)]