78743780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{881}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 171143280

約数和(自身を除く): 92399500

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 410, 436, 545, 820, 881, 1090, 1762, 2180, 3524, 4405, 4469, 8810, 8938, 17620, 17876, 22345, 36121, 44690, 72242, 89380, 96029, 144484, 180605, 192058, 361210, 384116, 480145, 722420, 960290, 1920580, 3937189, 7874378, 15748756, 19685945, 39371890, 78743780]

約数ペア:

[(1, 78743780), (2, 39371890), (4, 19685945), (5, 15748756), (10, 7874378), (20, 3937189), (41, 1920580), (82, 960290), (109, 722420), (164, 480145), (205, 384116), (218, 361210), (410, 192058), (436, 180605), (545, 144484), (820, 96029), (881, 89380), (1090, 72242), (1762, 44690), (2180, 36121), (3524, 22345), (4405, 17876), (4469, 17620), (8810, 8938)]