19972705

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 7243295

約数列:

[1, 5, 17, 19, 83, 85, 95, 149, 323, 415, 745, 1411, 1577, 1615, 2533, 2831, 7055, 7885, 12367, 12665, 14155, 26809, 48127, 61835, 134045, 210239, 234973, 240635, 1051195, 1174865, 3994541, 19972705]

約数ペア:

[(1, 19972705), (5, 3994541), (17, 1174865), (19, 1051195), (83, 240635), (85, 234973), (95, 210239), (149, 134045), (323, 61835), (415, 48127), (745, 26809), (1411, 14155), (1577, 12665), (1615, 12367), (2533, 7885), (2831, 7055)]