20988616

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12553}}^1$

素因数の和:12589

約数の個数: 32

約数和(自身を含む): 45194400

約数和(自身を除く): 24205784

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12553, 25106, 50212, 100424, 138083, 238507, 276166, 477014, 552332, 954028, 1104664, 1908056, 2623577, 5247154, 10494308, 20988616]

約数ペア:

[(1, 20988616), (2, 10494308), (4, 5247154), (8, 2623577), (11, 1908056), (19, 1104664), (22, 954028), (38, 552332), (44, 477014), (76, 276166), (88, 238507), (152, 138083), (209, 100424), (418, 50212), (836, 25106), (1672, 12553)]