20468366900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{36479}}^1$

素因数の和:36705

約数の個数: 72

約数和(自身を含む): 46103715840

約数和(自身を除く): 25635348940

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 181, 310, 362, 620, 724, 775, 905, 1550, 1810, 3100, 3620, 4525, 5611, 9050, 11222, 18100, 22444, 28055, 36479, 56110, 72958, 112220, 140275, 145916, 182395, 280550, 364790, 561100, 729580, 911975, 1130849, 1823950, 2261698, 3647900, 4523396, 5654245, 6602699, 11308490, 13205398, 22616980, 26410796, 28271225, 33013495, 56542450, 66026990, 113084900, 132053980, 165067475, 204683669, 330134950, 409367338, 660269900, 818734676, 1023418345, 2046836690, 4093673380, 5117091725, 10234183450, 20468366900]

約数ペア:

[(1, 20468366900), (2, 10234183450), (4, 5117091725), (5, 4093673380), (10, 2046836690), (20, 1023418345), (25, 818734676), (31, 660269900), (50, 409367338), (62, 330134950), (100, 204683669), (124, 165067475), (155, 132053980), (181, 113084900), (310, 66026990), (362, 56542450), (620, 33013495), (724, 28271225), (775, 26410796), (905, 22616980), (1550, 13205398), (1810, 11308490), (3100, 6602699), (3620, 5654245), (4525, 4523396), (5611, 3647900), (9050, 2261698), (11222, 1823950), (18100, 1130849), (22444, 911975), (28055, 729580), (36479, 561100), (56110, 364790), (72958, 280550), (112220, 182395), (140275, 145916)]