1238605

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:228

約数の個数: 16

約数和(自身を含む): 1571328

約数和(自身を除く): 332723

約数列:

[1, 5, 31, 61, 131, 155, 305, 655, 1891, 4061, 7991, 9455, 20305, 39955, 247721, 1238605]

約数ペア:

[(1, 1238605), (5, 247721), (31, 39955), (61, 20305), (131, 9455), (155, 7991), (305, 4061), (655, 1891)]