668198020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{34337}}^1$

素因数の和:34492

約数の個数: 48

約数和(自身を含む): 1615259520

約数和(自身を除く): 947061500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4865, 9730, 19460, 34337, 68674, 137348, 171685, 240359, 343370, 480718, 686740, 961436, 1201795, 2403590, 4772843, 4807180, 9545686, 19091372, 23864215, 33409901, 47728430, 66819802, 95456860, 133639604, 167049505, 334099010, 668198020]

約数ペア:

[(1, 668198020), (2, 334099010), (4, 167049505), (5, 133639604), (7, 95456860), (10, 66819802), (14, 47728430), (20, 33409901), (28, 23864215), (35, 19091372), (70, 9545686), (139, 4807180), (140, 4772843), (278, 2403590), (556, 1201795), (695, 961436), (973, 686740), (1390, 480718), (1946, 343370), (2780, 240359), (3892, 171685), (4865, 137348), (9730, 68674), (19460, 34337)]