21250605

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^2\times {\mathrm{227}}^1$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 34588512

約数和(自身を除く): 13337907

約数列:

[1, 3, 5, 15, 79, 227, 237, 395, 681, 1135, 1185, 3405, 6241, 17933, 18723, 31205, 53799, 89665, 93615, 268995, 1416707, 4250121, 7083535, 21250605]

約数ペア:

[(1, 21250605), (3, 7083535), (5, 4250121), (15, 1416707), (79, 268995), (227, 93615), (237, 89665), (395, 53799), (681, 31205), (1135, 18723), (1185, 17933), (3405, 6241)]