18023800

素因数分解:

$2^3\times 5^2\times {\mathrm{227}}^1\times {\mathrm{397}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 42195960

約数和(自身を除く): 24172160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 227, 397, 454, 794, 908, 1135, 1588, 1816, 1985, 2270, 3176, 3970, 4540, 5675, 7940, 9080, 9925, 11350, 15880, 19850, 22700, 39700, 45400, 79400, 90119, 180238, 360476, 450595, 720952, 901190, 1802380, 2252975, 3604760, 4505950, 9011900, 18023800]

約数ペア:

[(1, 18023800), (2, 9011900), (4, 4505950), (5, 3604760), (8, 2252975), (10, 1802380), (20, 901190), (25, 720952), (40, 450595), (50, 360476), (100, 180238), (200, 90119), (227, 79400), (397, 45400), (454, 39700), (794, 22700), (908, 19850), (1135, 15880), (1588, 11350), (1816, 9925), (1985, 9080), (2270, 7940), (3176, 5675), (3970, 4540)]