21906915

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 14381085

約数列:

[1, 3, 5, 15, 41, 123, 179, 199, 205, 537, 597, 615, 895, 995, 2685, 2985, 7339, 8159, 22017, 24477, 35621, 36695, 40795, 106863, 110085, 122385, 178105, 534315, 1460461, 4381383, 7302305, 21906915]

約数ペア:

[(1, 21906915), (3, 7302305), (5, 4381383), (15, 1460461), (41, 534315), (123, 178105), (179, 122385), (199, 110085), (205, 106863), (537, 40795), (597, 36695), (615, 35621), (895, 24477), (995, 22017), (2685, 8159), (2985, 7339)]