20521514

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:294

約数の個数: 32

約数和(自身を含む): 34245120

約数和(自身を除く): 13723606

約数列:

[1, 2, 13, 26, 79, 97, 103, 158, 194, 206, 1027, 1261, 1339, 2054, 2522, 2678, 7663, 8137, 9991, 15326, 16274, 19982, 99619, 105781, 129883, 199238, 211562, 259766, 789289, 1578578, 10260757, 20521514]

約数ペア:

[(1, 20521514), (2, 10260757), (13, 1578578), (26, 789289), (79, 259766), (97, 211562), (103, 199238), (158, 129883), (194, 105781), (206, 99619), (1027, 19982), (1261, 16274), (1339, 15326), (2054, 9991), (2522, 8137), (2678, 7663)]