21092835

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{457}}^1$

素因数の和:663

約数の個数: 32

約数和(自身を含む): 36009792

約数和(自身を除く): 14916957

約数列:

[1, 3, 5, 15, 17, 51, 85, 181, 255, 457, 543, 905, 1371, 2285, 2715, 3077, 6855, 7769, 9231, 15385, 23307, 38845, 46155, 82717, 116535, 248151, 413585, 1240755, 1406189, 4218567, 7030945, 21092835]

約数ペア:

[(1, 21092835), (3, 7030945), (5, 4218567), (15, 1406189), (17, 1240755), (51, 413585), (85, 248151), (181, 116535), (255, 82717), (457, 46155), (543, 38845), (905, 23307), (1371, 15385), (2285, 9231), (2715, 7769), (3077, 6855)]