20404041

素因数分解:

$3^1\times 7^3\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:354

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 11851959

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 251, 343, 553, 753, 1029, 1659, 1757, 3871, 5271, 11613, 12299, 19829, 27097, 36897, 59487, 81291, 86093, 138803, 258279, 416409, 971621, 2914863, 6801347, 20404041]

約数ペア:

[(1, 20404041), (3, 6801347), (7, 2914863), (21, 971621), (49, 416409), (79, 258279), (147, 138803), (237, 86093), (251, 81291), (343, 59487), (553, 36897), (753, 27097), (1029, 19829), (1659, 12299), (1757, 11613), (3871, 5271)]