20303591

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{271}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 26046720

約数和(自身を除く): 5743129

約数列:

[1, 7, 11, 49, 77, 139, 271, 539, 973, 1529, 1897, 2981, 6811, 10703, 13279, 20867, 37669, 74921, 146069, 263683, 414359, 1845781, 2900513, 20303591]

約数ペア:

[(1, 20303591), (7, 2900513), (11, 1845781), (49, 414359), (77, 263683), (139, 146069), (271, 74921), (539, 37669), (973, 20867), (1529, 13279), (1897, 10703), (2981, 6811)]