21755493

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{661}}^1$

素因数の和:746

約数の個数: 32

約数和(自身を含む): 34318080

約数和(自身を除く): 12562587

約数列:

[1, 3, 9, 23, 27, 53, 69, 159, 207, 477, 621, 661, 1219, 1431, 1983, 3657, 5949, 10971, 15203, 17847, 32913, 35033, 45609, 105099, 136827, 315297, 410481, 805759, 945891, 2417277, 7251831, 21755493]

約数ペア:

[(1, 21755493), (3, 7251831), (9, 2417277), (23, 945891), (27, 805759), (53, 410481), (69, 315297), (159, 136827), (207, 105099), (477, 45609), (621, 35033), (661, 32913), (1219, 17847), (1431, 15203), (1983, 10971), (3657, 5949)]