19991335

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{829}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 30119040

約数和(自身を除く): 10127705

約数列:

[1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 829, 1855, 3445, 4145, 4823, 5803, 10777, 24115, 29015, 43937, 53885, 75439, 219685, 307559, 377195, 571181, 1537795, 2855905, 3998267, 19991335]

約数ペア:

[(1, 19991335), (5, 3998267), (7, 2855905), (13, 1537795), (35, 571181), (53, 377195), (65, 307559), (91, 219685), (265, 75439), (371, 53885), (455, 43937), (689, 29015), (829, 24115), (1855, 10777), (3445, 5803), (4145, 4823)]