21965769

素因数分解:

$3^3\times 7^2\times {\mathrm{16603}}^1$

素因数の和:16626

約数の個数: 24

約数和(自身を含む): 37857120

約数和(自身を除く): 15891351

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 16603, 49809, 116221, 149427, 348663, 448281, 813547, 1045989, 2440641, 3137967, 7321923, 21965769]

約数ペア:

[(1, 21965769), (3, 7321923), (7, 3137967), (9, 2440641), (21, 1045989), (27, 813547), (49, 448281), (63, 348663), (147, 149427), (189, 116221), (441, 49809), (1323, 16603)]