18882440

素因数分解:

$2^3\times 5^1\times {\mathrm{547}}^1\times {\mathrm{863}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 42612480

約数和(自身を除く): 23730040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547, 863, 1094, 1726, 2188, 2735, 3452, 4315, 4376, 5470, 6904, 8630, 10940, 17260, 21880, 34520, 472061, 944122, 1888244, 2360305, 3776488, 4720610, 9441220, 18882440]

約数ペア:

[(1, 18882440), (2, 9441220), (4, 4720610), (5, 3776488), (8, 2360305), (10, 1888244), (20, 944122), (40, 472061), (547, 34520), (863, 21880), (1094, 17260), (1726, 10940), (2188, 8630), (2735, 6904), (3452, 5470), (4315, 4376)]