21095140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{379}}^1$

素因数の和:433

約数の個数: 72

約数和(自身を含む): 50944320

約数和(自身を除く): 29849180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 121, 220, 230, 242, 253, 379, 460, 484, 506, 605, 758, 1012, 1210, 1265, 1516, 1895, 2420, 2530, 2783, 3790, 4169, 5060, 5566, 7580, 8338, 8717, 11132, 13915, 16676, 17434, 20845, 27830, 34868, 41690, 43585, 45859, 55660, 83380, 87170, 91718, 95887, 174340, 183436, 191774, 229295, 383548, 458590, 479435, 917180, 958870, 1054757, 1917740, 2109514, 4219028, 5273785, 10547570, 21095140]

約数ペア:

[(1, 21095140), (2, 10547570), (4, 5273785), (5, 4219028), (10, 2109514), (11, 1917740), (20, 1054757), (22, 958870), (23, 917180), (44, 479435), (46, 458590), (55, 383548), (92, 229295), (110, 191774), (115, 183436), (121, 174340), (220, 95887), (230, 91718), (242, 87170), (253, 83380), (379, 55660), (460, 45859), (484, 43585), (506, 41690), (605, 34868), (758, 27830), (1012, 20845), (1210, 17434), (1265, 16676), (1516, 13915), (1895, 11132), (2420, 8717), (2530, 8338), (2783, 7580), (3790, 5566), (4169, 5060)]