78820420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{80429}}^1$

素因数の和:80452

約数の個数: 36

約数和(自身を含む): 192549420

約数和(自身を除く): 113729000

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 80429, 160858, 321716, 402145, 563003, 804290, 1126006, 1608580, 2252012, 2815015, 3941021, 5630030, 7882042, 11260060, 15764084, 19705105, 39410210, 78820420]

約数ペア:

[(1, 78820420), (2, 39410210), (4, 19705105), (5, 15764084), (7, 11260060), (10, 7882042), (14, 5630030), (20, 3941021), (28, 2815015), (35, 2252012), (49, 1608580), (70, 1126006), (98, 804290), (140, 563003), (196, 402145), (245, 321716), (490, 160858), (980, 80429)]