18478520

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9829}}^1$

素因数の和:9887

約数の個数: 32

約数和(自身を含む): 42465600

約数和(自身を除く): 23987080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 9829, 19658, 39316, 49145, 78632, 98290, 196580, 393160, 461963, 923926, 1847852, 2309815, 3695704, 4619630, 9239260, 18478520]

約数ペア:

[(1, 18478520), (2, 9239260), (4, 4619630), (5, 3695704), (8, 2309815), (10, 1847852), (20, 923926), (40, 461963), (47, 393160), (94, 196580), (188, 98290), (235, 78632), (376, 49145), (470, 39316), (940, 19658), (1880, 9829)]