20851418

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1214

約数の個数: 32

約数和(自身を含む): 38361600

約数和(自身を除く): 17510182

約数列:

[1, 2, 7, 14, 17, 34, 79, 119, 158, 238, 553, 1106, 1109, 1343, 2218, 2686, 7763, 9401, 15526, 18802, 18853, 37706, 87611, 131971, 175222, 263942, 613277, 1226554, 1489387, 2978774, 10425709, 20851418]

約数ペア:

[(1, 20851418), (2, 10425709), (7, 2978774), (14, 1489387), (17, 1226554), (34, 613277), (79, 263942), (119, 175222), (158, 131971), (238, 87611), (553, 37706), (1106, 18853), (1109, 18802), (1343, 15526), (2218, 9401), (2686, 7763)]