639969386

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2688947}}^1$

素因数の和:2688973

約数の個数: 16

約数和(自身を含む): 1161625536

約数和(自身を除く): 521656150

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 2688947, 5377894, 18822629, 37645258, 45712099, 91424198, 319984693, 639969386]

約数ペア:

[(1, 639969386), (2, 319984693), (7, 91424198), (14, 45712099), (17, 37645258), (34, 18822629), (119, 5377894), (238, 2688947)]