16985215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 23063040

約数和(自身を除く): 6077825

約数列:

[1, 5, 13, 43, 59, 65, 103, 215, 295, 515, 559, 767, 1339, 2537, 2795, 3835, 4429, 6077, 6695, 12685, 22145, 30385, 32981, 57577, 79001, 164905, 261311, 287885, 395005, 1306555, 3397043, 16985215]

約数ペア:

[(1, 16985215), (5, 3397043), (13, 1306555), (43, 395005), (59, 287885), (65, 261311), (103, 164905), (215, 79001), (295, 57577), (515, 32981), (559, 30385), (767, 22145), (1339, 12685), (2537, 6695), (2795, 6077), (3835, 4429)]