18513765

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2689}}^1$

素因数の和:2723

約数の個数: 40

約数和(自身を含む): 35152920

約数和(自身を除く): 16639155

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 2689, 6885, 8067, 13445, 24201, 40335, 45713, 72603, 121005, 137139, 217809, 228565, 363015, 411417, 685695, 1089045, 1234251, 2057085, 3702753, 6171255, 18513765]

約数ペア:

[(1, 18513765), (3, 6171255), (5, 3702753), (9, 2057085), (15, 1234251), (17, 1089045), (27, 685695), (45, 411417), (51, 363015), (81, 228565), (85, 217809), (135, 137139), (153, 121005), (255, 72603), (405, 45713), (459, 40335), (765, 24201), (1377, 13445), (2295, 8067), (2689, 6885)]