20552455

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 32481792

約数和(自身を除く): 11929337

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 121, 161, 211, 253, 385, 605, 805, 847, 1055, 1265, 1477, 1771, 2321, 2783, 4235, 4853, 7385, 8855, 11605, 13915, 16247, 19481, 24265, 25531, 33971, 53383, 81235, 97405, 127655, 169855, 178717, 266915, 373681, 587213, 893585, 1868405, 2936065, 4110491, 20552455]

約数ペア:

[(1, 20552455), (5, 4110491), (7, 2936065), (11, 1868405), (23, 893585), (35, 587213), (55, 373681), (77, 266915), (115, 178717), (121, 169855), (161, 127655), (211, 97405), (253, 81235), (385, 53383), (605, 33971), (805, 25531), (847, 24265), (1055, 19481), (1265, 16247), (1477, 13915), (1771, 11605), (2321, 8855), (2783, 7385), (4235, 4853)]