21867279

素因数分解:

$3^1\times 7^3\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:372

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 12692721

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 269, 343, 553, 807, 1029, 1659, 1883, 3871, 5649, 11613, 13181, 21251, 27097, 39543, 63753, 81291, 92267, 148757, 276801, 446271, 1041299, 3123897, 7289093, 21867279]

約数ペア:

[(1, 21867279), (3, 7289093), (7, 3123897), (21, 1041299), (49, 446271), (79, 276801), (147, 148757), (237, 92267), (269, 81291), (343, 63753), (553, 39543), (807, 27097), (1029, 21251), (1659, 13181), (1883, 11613), (3871, 5649)]