21388624

素因数分解:

$2^4\times {\mathrm{317}}^1\times {\mathrm{4217}}^1$

素因数の和:4542

約数の個数: 20

約数和(自身を含む): 41581044

約数和(自身を除く): 20192420

約数列:

[1, 2, 4, 8, 16, 317, 634, 1268, 2536, 4217, 5072, 8434, 16868, 33736, 67472, 1336789, 2673578, 5347156, 10694312, 21388624]

約数ペア:

[(1, 21388624), (2, 10694312), (4, 5347156), (8, 2673578), (16, 1336789), (317, 67472), (634, 33736), (1268, 16868), (2536, 8434), (4217, 5072)]