21525453

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{743}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 33926400

約数和(自身を除く): 12400947

約数列:

[1, 3, 9, 27, 29, 37, 87, 111, 261, 333, 743, 783, 999, 1073, 2229, 3219, 6687, 9657, 20061, 21547, 27491, 28971, 64641, 82473, 193923, 247419, 581769, 742257, 797239, 2391717, 7175151, 21525453]

約数ペア:

[(1, 21525453), (3, 7175151), (9, 2391717), (27, 797239), (29, 742257), (37, 581769), (87, 247419), (111, 193923), (261, 82473), (333, 64641), (743, 28971), (783, 27491), (999, 21547), (1073, 20061), (2229, 9657), (3219, 6687)]