20123785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 27574272

約数和(自身を除く): 7450487

約数列:

[1, 5, 11, 43, 55, 67, 127, 215, 335, 473, 635, 737, 1397, 2365, 2881, 3685, 5461, 6985, 8509, 14405, 27305, 31691, 42545, 60071, 93599, 158455, 300355, 365887, 467995, 1829435, 4024757, 20123785]

約数ペア:

[(1, 20123785), (5, 4024757), (11, 1829435), (43, 467995), (55, 365887), (67, 300355), (127, 158455), (215, 93599), (335, 60071), (473, 42545), (635, 31691), (737, 27305), (1397, 14405), (2365, 8509), (2881, 6985), (3685, 5461)]