19917795

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4111}}^1$

素因数の和:4155

約数の個数: 32

約数和(自身を含む): 35527680

約数和(自身を除く): 15609885

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4111, 4845, 12333, 20555, 61665, 69887, 78109, 209661, 234327, 349435, 390545, 1048305, 1171635, 1327853, 3983559, 6639265, 19917795]

約数ペア:

[(1, 19917795), (3, 6639265), (5, 3983559), (15, 1327853), (17, 1171635), (19, 1048305), (51, 390545), (57, 349435), (85, 234327), (95, 209661), (255, 78109), (285, 69887), (323, 61665), (969, 20555), (1615, 12333), (4111, 4845)]