20542060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13339}}^1$

素因数の和:13366

約数の個数: 48

約数和(自身を含む): 53786880

約数和(自身を除く): 33244820

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13339, 26678, 53356, 66695, 93373, 133390, 146729, 186746, 266780, 293458, 373492, 466865, 586916, 733645, 933730, 1027103, 1467290, 1867460, 2054206, 2934580, 4108412, 5135515, 10271030, 20542060]

約数ペア:

[(1, 20542060), (2, 10271030), (4, 5135515), (5, 4108412), (7, 2934580), (10, 2054206), (11, 1867460), (14, 1467290), (20, 1027103), (22, 933730), (28, 733645), (35, 586916), (44, 466865), (55, 373492), (70, 293458), (77, 266780), (110, 186746), (140, 146729), (154, 133390), (220, 93373), (308, 66695), (385, 53356), (770, 26678), (1540, 13339)]