780097960

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{77699}}^1$

素因数の和:77961

約数の個数: 32

約数和(自身を含む): 1762236000

約数和(自身を除く): 982138040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 77699, 155398, 310796, 388495, 621592, 776990, 1553980, 3107960, 19502449, 39004898, 78009796, 97512245, 156019592, 195024490, 390048980, 780097960]

約数ペア:

[(1, 780097960), (2, 390048980), (4, 195024490), (5, 156019592), (8, 97512245), (10, 78009796), (20, 39004898), (40, 19502449), (251, 3107960), (502, 1553980), (1004, 776990), (1255, 621592), (2008, 388495), (2510, 310796), (5020, 155398), (10040, 77699)]