20437600

素因数分解:

$2^5\times 5^2\times {\mathrm{59}}^1\times {\mathrm{433}}^1$

素因数の和:512

約数の個数: 72

約数和(自身を含む): 50856120

約数和(自身を除く): 30418520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 59, 80, 100, 118, 160, 200, 236, 295, 400, 433, 472, 590, 800, 866, 944, 1180, 1475, 1732, 1888, 2165, 2360, 2950, 3464, 4330, 4720, 5900, 6928, 8660, 9440, 10825, 11800, 13856, 17320, 21650, 23600, 25547, 34640, 43300, 47200, 51094, 69280, 86600, 102188, 127735, 173200, 204376, 255470, 346400, 408752, 510940, 638675, 817504, 1021880, 1277350, 2043760, 2554700, 4087520, 5109400, 10218800, 20437600]

約数ペア:

[(1, 20437600), (2, 10218800), (4, 5109400), (5, 4087520), (8, 2554700), (10, 2043760), (16, 1277350), (20, 1021880), (25, 817504), (32, 638675), (40, 510940), (50, 408752), (59, 346400), (80, 255470), (100, 204376), (118, 173200), (160, 127735), (200, 102188), (236, 86600), (295, 69280), (400, 51094), (433, 47200), (472, 43300), (590, 34640), (800, 25547), (866, 23600), (944, 21650), (1180, 17320), (1475, 13856), (1732, 11800), (1888, 10825), (2165, 9440), (2360, 8660), (2950, 6928), (3464, 5900), (4330, 4720)]