21670055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 29611008

約数和(自身を除く): 7940953

約数列:

[1, 5, 11, 47, 55, 83, 101, 235, 415, 505, 517, 913, 1111, 2585, 3901, 4565, 4747, 5555, 8383, 19505, 23735, 41915, 42911, 52217, 92213, 214555, 261085, 394001, 461065, 1970005, 4334011, 21670055]

約数ペア:

[(1, 21670055), (5, 4334011), (11, 1970005), (47, 461065), (55, 394001), (83, 261085), (101, 214555), (235, 92213), (415, 52217), (505, 42911), (517, 41915), (913, 23735), (1111, 19505), (2585, 8383), (3901, 5555), (4565, 4747)]