21269488

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32423}}^1$

素因数の和:32472

約数の個数: 20

約数和(自身を含む): 42216048

約数和(自身を除く): 20946560

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32423, 64846, 129692, 259384, 518768, 1329343, 2658686, 5317372, 10634744, 21269488]

約数ペア:

[(1, 21269488), (2, 10634744), (4, 5317372), (8, 2658686), (16, 1329343), (41, 518768), (82, 259384), (164, 129692), (328, 64846), (656, 32423)]