217400145

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1\times {\mathrm{769}}^1$

素因数の和:1225

約数の個数: 32

約数和(自身を含む): 356590080

約数和(自身を除く): 139189935

約数列:

[1, 3, 5, 15, 47, 141, 235, 401, 705, 769, 1203, 2005, 2307, 3845, 6015, 11535, 18847, 36143, 56541, 94235, 108429, 180715, 282705, 308369, 542145, 925107, 1541845, 4625535, 14493343, 43480029, 72466715, 217400145]

約数ペア:

[(1, 217400145), (3, 72466715), (5, 43480029), (15, 14493343), (47, 4625535), (141, 1541845), (235, 925107), (401, 542145), (705, 308369), (769, 282705), (1203, 180715), (2005, 108429), (2307, 94235), (3845, 56541), (6015, 36143), (11535, 18847)]