19646475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{811}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 36247680

約数和(自身を除く): 16601205

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 75, 85, 95, 255, 285, 323, 425, 475, 811, 969, 1275, 1425, 1615, 2433, 4055, 4845, 8075, 12165, 13787, 15409, 20275, 24225, 41361, 46227, 60825, 68935, 77045, 206805, 231135, 261953, 344675, 385225, 785859, 1034025, 1155675, 1309765, 3929295, 6548825, 19646475]

約数ペア:

[(1, 19646475), (3, 6548825), (5, 3929295), (15, 1309765), (17, 1155675), (19, 1034025), (25, 785859), (51, 385225), (57, 344675), (75, 261953), (85, 231135), (95, 206805), (255, 77045), (285, 68935), (323, 60825), (425, 46227), (475, 41361), (811, 24225), (969, 20275), (1275, 15409), (1425, 13787), (1615, 12165), (2433, 8075), (4055, 4845)]