20684490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 30740790

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 61, 89, 122, 127, 178, 183, 254, 267, 305, 366, 381, 445, 534, 610, 635, 762, 890, 915, 1270, 1335, 1830, 1905, 2670, 3810, 5429, 7747, 10858, 11303, 15494, 16287, 22606, 23241, 27145, 32574, 33909, 38735, 46482, 54290, 56515, 67818, 77470, 81435, 113030, 116205, 162870, 169545, 232410, 339090, 689483, 1378966, 2068449, 3447415, 4136898, 6894830, 10342245, 20684490]

約数ペア:

[(1, 20684490), (2, 10342245), (3, 6894830), (5, 4136898), (6, 3447415), (10, 2068449), (15, 1378966), (30, 689483), (61, 339090), (89, 232410), (122, 169545), (127, 162870), (178, 116205), (183, 113030), (254, 81435), (267, 77470), (305, 67818), (366, 56515), (381, 54290), (445, 46482), (534, 38735), (610, 33909), (635, 32574), (762, 27145), (890, 23241), (915, 22606), (1270, 16287), (1335, 15494), (1830, 11303), (1905, 10858), (2670, 7747), (3810, 5429)]