217719255

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{65677}}^1$

素因数の和:65715

約数の個数: 32

約数和(自身を含む): 397220544

約数和(自身を除く): 179501289

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 65677, 197031, 328385, 853801, 985155, 1116509, 2561403, 3349527, 4269005, 5582545, 12807015, 14514617, 16747635, 43543851, 72573085, 217719255]

約数ペア:

[(1, 217719255), (3, 72573085), (5, 43543851), (13, 16747635), (15, 14514617), (17, 12807015), (39, 5582545), (51, 4269005), (65, 3349527), (85, 2561403), (195, 1116509), (221, 985155), (255, 853801), (663, 328385), (1105, 197031), (3315, 65677)]