2155005

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1$

素因数の和:347

約数の個数: 40

約数和(自身を含む): 4103352

約数和(自身を除く): 1948347

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 313, 405, 459, 765, 939, 1377, 1565, 2295, 2817, 4695, 5321, 6885, 8451, 14085, 15963, 25353, 26605, 42255, 47889, 79815, 126765, 143667, 239445, 431001, 718335, 2155005]

約数ペア:

[(1, 2155005), (3, 718335), (5, 431001), (9, 239445), (15, 143667), (17, 126765), (27, 79815), (45, 47889), (51, 42255), (81, 26605), (85, 25353), (135, 15963), (153, 14085), (255, 8451), (313, 6885), (405, 5321), (459, 4695), (765, 2817), (939, 2295), (1377, 1565)]