21962385

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1511}}^1$

素因数の和:1558

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 20494575

約数列:

[1, 3, 5, 9, 15, 17, 19, 45, 51, 57, 85, 95, 153, 171, 255, 285, 323, 765, 855, 969, 1511, 1615, 2907, 4533, 4845, 7555, 13599, 14535, 22665, 25687, 28709, 67995, 77061, 86127, 128435, 143545, 231183, 258381, 385305, 430635, 488053, 1155915, 1291905, 1464159, 2440265, 4392477, 7320795, 21962385]

約数ペア:

[(1, 21962385), (3, 7320795), (5, 4392477), (9, 2440265), (15, 1464159), (17, 1291905), (19, 1155915), (45, 488053), (51, 430635), (57, 385305), (85, 258381), (95, 231183), (153, 143545), (171, 128435), (255, 86127), (285, 77061), (323, 67995), (765, 28709), (855, 25687), (969, 22665), (1511, 14535), (1615, 13599), (2907, 7555), (4533, 4845)]