21128344

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49831}}^1$

素因数の和:49890

約数の個数: 16

約数和(自身を含む): 40363920

約数和(自身を除く): 19235576

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49831, 99662, 199324, 398648, 2641043, 5282086, 10564172, 21128344]

約数ペア:

[(1, 21128344), (2, 10564172), (4, 5282086), (8, 2641043), (53, 398648), (106, 199324), (212, 99662), (424, 49831)]