81917080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292561}}^1$

素因数の和:292579

約数の個数: 32

約数和(自身を含む): 210644640

約数和(自身を除く): 128727560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292561, 585122, 1170244, 1462805, 2047927, 2340488, 2925610, 4095854, 5851220, 8191708, 10239635, 11702440, 16383416, 20479270, 40958540, 81917080]

約数ペア:

[(1, 81917080), (2, 40958540), (4, 20479270), (5, 16383416), (7, 11702440), (8, 10239635), (10, 8191708), (14, 5851220), (20, 4095854), (28, 2925610), (35, 2340488), (40, 2047927), (56, 1462805), (70, 1170244), (140, 585122), (280, 292561)]