788982680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{481087}}^1$

素因数の和:481139

約数の個数: 32

約数和(自身を含む): 1818512640

約数和(自身を除く): 1029529960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 481087, 962174, 1924348, 2405435, 3848696, 4810870, 9621740, 19243480, 19724567, 39449134, 78898268, 98622835, 157796536, 197245670, 394491340, 788982680]

約数ペア:

[(1, 788982680), (2, 394491340), (4, 197245670), (5, 157796536), (8, 98622835), (10, 78898268), (20, 39449134), (40, 19724567), (41, 19243480), (82, 9621740), (164, 4810870), (205, 3848696), (328, 2405435), (410, 1924348), (820, 962174), (1640, 481087)]