21680430254

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{19602559}}^1$

素因数の和:19602647

約数の個数: 16

約数和(自身を含む): 37636915200

約数和(自身を除く): 15956484946

約数列:

[1, 2, 7, 14, 79, 158, 553, 1106, 19602559, 39205118, 137217913, 274435826, 1548602161, 3097204322, 10840215127, 21680430254]

約数ペア:

[(1, 21680430254), (2, 10840215127), (7, 3097204322), (14, 1548602161), (79, 274435826), (158, 137217913), (553, 39205118), (1106, 19602559)]