20425955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 28435968

約数和(自身を除く): 8010013

約数列:

[1, 5, 11, 23, 55, 67, 115, 241, 253, 335, 737, 1205, 1265, 1541, 2651, 3685, 5543, 7705, 13255, 16147, 16951, 27715, 60973, 80735, 84755, 177617, 304865, 371381, 888085, 1856905, 4085191, 20425955]

約数ペア:

[(1, 20425955), (5, 4085191), (11, 1856905), (23, 888085), (55, 371381), (67, 304865), (115, 177617), (241, 84755), (253, 80735), (335, 60973), (737, 27715), (1205, 16951), (1265, 16147), (1541, 13255), (2651, 7705), (3685, 5543)]