21056368

素因数分解:

$2^4\times {\mathrm{659}}^1\times {\mathrm{1997}}^1$

素因数の和:2664

約数の個数: 20

約数和(自身を含む): 40879080

約数和(自身を除く): 19822712

約数列:

[1, 2, 4, 8, 16, 659, 1318, 1997, 2636, 3994, 5272, 7988, 10544, 15976, 31952, 1316023, 2632046, 5264092, 10528184, 21056368]

約数ペア:

[(1, 21056368), (2, 10528184), (4, 5264092), (8, 2632046), (16, 1316023), (659, 31952), (1318, 15976), (1997, 10544), (2636, 7988), (3994, 5272)]