68428820

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{13313}}^1$

素因数の和:13579

約数の個数: 24

約数和(自身を含む): 144270504

約数和(自身を除く): 75841684

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 13313, 26626, 53252, 66565, 133130, 266260, 3421441, 6842882, 13685764, 17107205, 34214410, 68428820]

約数ペア:

[(1, 68428820), (2, 34214410), (4, 17107205), (5, 13685764), (10, 6842882), (20, 3421441), (257, 266260), (514, 133130), (1028, 66565), (1285, 53252), (2570, 26626), (5140, 13313)]