19929668

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41177}}^1$

素因数の和:41203

約数の個数: 18

約数和(自身を含む): 38336718

約数和(自身を除く): 18407050

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 41177, 82354, 164708, 452947, 905894, 1811788, 4982417, 9964834, 19929668]

約数ペア:

[(1, 19929668), (2, 9964834), (4, 4982417), (11, 1811788), (22, 905894), (44, 452947), (121, 164708), (242, 82354), (484, 41177)]