20619775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{773}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 28216944

約数和(自身を除く): 7597169

約数列:

[1, 5, 11, 25, 55, 97, 275, 485, 773, 1067, 2425, 3865, 5335, 8503, 19325, 26675, 42515, 74981, 212575, 374905, 824791, 1874525, 4123955, 20619775]

約数ペア:

[(1, 20619775), (5, 4123955), (11, 1874525), (25, 824791), (55, 374905), (97, 212575), (275, 74981), (485, 42515), (773, 26675), (1067, 19325), (2425, 8503), (3865, 5335)]