19389388

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{811}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 35013440

約数和(自身を除く): 15624052

約数列:

[1, 2, 4, 43, 86, 139, 172, 278, 556, 811, 1622, 3244, 5977, 11954, 23908, 34873, 69746, 112729, 139492, 225458, 450916, 4847347, 9694694, 19389388]

約数ペア:

[(1, 19389388), (2, 9694694), (4, 4847347), (43, 450916), (86, 225458), (139, 139492), (172, 112729), (278, 69746), (556, 34873), (811, 23908), (1622, 11954), (3244, 5977)]