219555

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:76

約数の個数: 48

約数和(自身を含む): 471744

約数和(自身を除く): 252189

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 41, 45, 51, 63, 85, 105, 119, 123, 153, 205, 255, 287, 315, 357, 369, 595, 615, 697, 765, 861, 1071, 1435, 1785, 1845, 2091, 2583, 3485, 4305, 4879, 5355, 6273, 10455, 12915, 14637, 24395, 31365, 43911, 73185, 219555]

約数ペア:

[(1, 219555), (3, 73185), (5, 43911), (7, 31365), (9, 24395), (15, 14637), (17, 12915), (21, 10455), (35, 6273), (41, 5355), (45, 4879), (51, 4305), (63, 3485), (85, 2583), (105, 2091), (119, 1845), (123, 1785), (153, 1435), (205, 1071), (255, 861), (287, 765), (315, 697), (357, 615), (369, 595)]