219091905

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1799

約数の個数: 64

約数和(自身を含む): 416586240

約数和(自身を除く): 197494335

約数列:

[1, 3, 5, 9, 15, 23, 27, 41, 45, 69, 115, 123, 135, 205, 207, 345, 369, 615, 621, 943, 1035, 1107, 1721, 1845, 2829, 3105, 4715, 5163, 5535, 8487, 8605, 14145, 15489, 25461, 25815, 39583, 42435, 46467, 70561, 77445, 118749, 127305, 197915, 211683, 232335, 352805, 356247, 593745, 635049, 1058415, 1068741, 1622903, 1781235, 1905147, 3175245, 4868709, 5343705, 8114515, 9525735, 14606127, 24343545, 43818381, 73030635, 219091905]

約数ペア:

[(1, 219091905), (3, 73030635), (5, 43818381), (9, 24343545), (15, 14606127), (23, 9525735), (27, 8114515), (41, 5343705), (45, 4868709), (69, 3175245), (115, 1905147), (123, 1781235), (135, 1622903), (205, 1068741), (207, 1058415), (345, 635049), (369, 593745), (615, 356247), (621, 352805), (943, 232335), (1035, 211683), (1107, 197915), (1721, 127305), (1845, 118749), (2829, 77445), (3105, 70561), (4715, 46467), (5163, 42435), (5535, 39583), (8487, 25815), (8605, 25461), (14145, 15489)]