19773215

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 32749920

約数和(自身を除く): 12976705

約数列:

[1, 5, 7, 11, 23, 29, 35, 49, 55, 77, 115, 121, 145, 161, 203, 245, 253, 319, 385, 539, 605, 667, 805, 847, 1015, 1127, 1265, 1421, 1595, 1771, 2233, 2695, 2783, 3335, 3509, 4235, 4669, 5635, 5929, 7105, 7337, 8855, 11165, 12397, 13915, 15631, 17545, 19481, 23345, 24563, 29645, 32683, 36685, 51359, 61985, 78155, 80707, 97405, 122815, 136367, 163415, 171941, 256795, 359513, 403535, 564949, 681835, 859705, 1797565, 2824745, 3954643, 19773215]

約数ペア:

[(1, 19773215), (5, 3954643), (7, 2824745), (11, 1797565), (23, 859705), (29, 681835), (35, 564949), (49, 403535), (55, 359513), (77, 256795), (115, 171941), (121, 163415), (145, 136367), (161, 122815), (203, 97405), (245, 80707), (253, 78155), (319, 61985), (385, 51359), (539, 36685), (605, 32683), (667, 29645), (805, 24563), (847, 23345), (1015, 19481), (1127, 17545), (1265, 15631), (1421, 13915), (1595, 12397), (1771, 11165), (2233, 8855), (2695, 7337), (2783, 7105), (3335, 5929), (3509, 5635), (4235, 4669)]