217876895

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 282916800

約数和(自身を除く): 65039905

約数列:

[1, 5, 19, 73, 89, 95, 353, 365, 445, 1387, 1691, 1765, 6497, 6707, 6935, 8455, 25769, 31417, 32485, 33535, 123443, 128845, 157085, 489611, 596923, 617215, 2293441, 2448055, 2984615, 11467205, 43575379, 217876895]

約数ペア:

[(1, 217876895), (5, 43575379), (19, 11467205), (73, 2984615), (89, 2448055), (95, 2293441), (353, 617215), (365, 596923), (445, 489611), (1387, 157085), (1691, 128845), (1765, 123443), (6497, 33535), (6707, 32485), (6935, 31417), (8455, 25769)]