1319380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1609}}^1$

素因数の和:1659

約数の個数: 24

約数和(自身を含む): 2840040

約数和(自身を除く): 1520660

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1609, 3218, 6436, 8045, 16090, 32180, 65969, 131938, 263876, 329845, 659690, 1319380]

約数ペア:

[(1, 1319380), (2, 659690), (4, 329845), (5, 263876), (10, 131938), (20, 65969), (41, 32180), (82, 16090), (164, 8045), (205, 6436), (410, 3218), (820, 1609)]