20817461

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 26492928

約数和(自身を除く): 5675467

約数列:

[1, 7, 23, 31, 43, 97, 161, 217, 301, 679, 713, 989, 1333, 2231, 3007, 4171, 4991, 6923, 9331, 15617, 21049, 29197, 30659, 69161, 95933, 129301, 214613, 484127, 671531, 905107, 2973923, 20817461]

約数ペア:

[(1, 20817461), (7, 2973923), (23, 905107), (31, 671531), (43, 484127), (97, 214613), (161, 129301), (217, 95933), (301, 69161), (679, 30659), (713, 29197), (989, 21049), (1333, 15617), (2231, 9331), (3007, 6923), (4171, 4991)]