2638760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1609}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 6085800

約数和(自身を除く): 3447040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1609, 1640, 3218, 6436, 8045, 12872, 16090, 32180, 64360, 65969, 131938, 263876, 329845, 527752, 659690, 1319380, 2638760]

約数ペア:

[(1, 2638760), (2, 1319380), (4, 659690), (5, 527752), (8, 329845), (10, 263876), (20, 131938), (40, 65969), (41, 64360), (82, 32180), (164, 16090), (205, 12872), (328, 8045), (410, 6436), (820, 3218), (1609, 1640)]