20654600

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1693}}^1$

素因数の和:1770

約数の個数: 48

約数和(自身を含む): 48838020

約数和(自身を除く): 28183420

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 488, 610, 1220, 1525, 1693, 2440, 3050, 3386, 6100, 6772, 8465, 12200, 13544, 16930, 33860, 42325, 67720, 84650, 103273, 169300, 206546, 338600, 413092, 516365, 826184, 1032730, 2065460, 2581825, 4130920, 5163650, 10327300, 20654600]

約数ペア:

[(1, 20654600), (2, 10327300), (4, 5163650), (5, 4130920), (8, 2581825), (10, 2065460), (20, 1032730), (25, 826184), (40, 516365), (50, 413092), (61, 338600), (100, 206546), (122, 169300), (200, 103273), (244, 84650), (305, 67720), (488, 42325), (610, 33860), (1220, 16930), (1525, 13544), (1693, 12200), (2440, 8465), (3050, 6772), (3386, 6100)]