21856568

素因数分解:

$2^3\times {\mathrm{199}}^1\times {\mathrm{13729}}^1$

素因数の和:13934

約数の個数: 16

約数和(自身を含む): 41190000

約数和(自身を除く): 19333432

約数列:

[1, 2, 4, 8, 199, 398, 796, 1592, 13729, 27458, 54916, 109832, 2732071, 5464142, 10928284, 21856568]

約数ペア:

[(1, 21856568), (2, 10928284), (4, 5464142), (8, 2732071), (199, 109832), (398, 54916), (796, 27458), (1592, 13729)]