19506753

素因数分解:

$3^2\times 7^3\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 48

約数和(自身を含む): 33696000

約数和(自身を除く): 14189247

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 89, 147, 213, 267, 343, 441, 497, 623, 639, 801, 1029, 1491, 1869, 3087, 3479, 4361, 4473, 5607, 6319, 10437, 13083, 18957, 24353, 30527, 31311, 39249, 44233, 56871, 73059, 91581, 132699, 219177, 274743, 309631, 398097, 928893, 2167417, 2786679, 6502251, 19506753]

約数ペア:

[(1, 19506753), (3, 6502251), (7, 2786679), (9, 2167417), (21, 928893), (49, 398097), (63, 309631), (71, 274743), (89, 219177), (147, 132699), (213, 91581), (267, 73059), (343, 56871), (441, 44233), (497, 39249), (623, 31311), (639, 30527), (801, 24353), (1029, 18957), (1491, 13083), (1869, 10437), (3087, 6319), (3479, 5607), (4361, 4473)]