20520724

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9277}}^1$

素因数の和:9367

約数の個数: 24

約数和(自身を含む): 41565440

約数和(自身を除く): 21044716

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9277, 18554, 37108, 64939, 129878, 259756, 732883, 1465766, 2931532, 5130181, 10260362, 20520724]

約数ペア:

[(1, 20520724), (2, 10260362), (4, 5130181), (7, 2931532), (14, 1465766), (28, 732883), (79, 259756), (158, 129878), (316, 64939), (553, 37108), (1106, 18554), (2212, 9277)]