81989800

素因数分解:

$2^3\times 5^2\times {\mathrm{109}}^1\times {\mathrm{3761}}^1$

素因数の和:3886

約数の個数: 48

約数和(自身を含む): 192426300

約数和(自身を除く): 110436500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 200, 218, 436, 545, 872, 1090, 2180, 2725, 3761, 4360, 5450, 7522, 10900, 15044, 18805, 21800, 30088, 37610, 75220, 94025, 150440, 188050, 376100, 409949, 752200, 819898, 1639796, 2049745, 3279592, 4099490, 8198980, 10248725, 16397960, 20497450, 40994900, 81989800]

約数ペア:

[(1, 81989800), (2, 40994900), (4, 20497450), (5, 16397960), (8, 10248725), (10, 8198980), (20, 4099490), (25, 3279592), (40, 2049745), (50, 1639796), (100, 819898), (109, 752200), (200, 409949), (218, 376100), (436, 188050), (545, 150440), (872, 94025), (1090, 75220), (2180, 37610), (2725, 30088), (3761, 21800), (4360, 18805), (5450, 15044), (7522, 10900)]