268996820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{479}}^1\times {\mathrm{653}}^1$

素因数の和:1184

約数の個数: 48

約数和(自身を含む): 580124160

約数和(自身を除く): 311127340

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 479, 653, 860, 958, 1306, 1916, 2395, 2612, 3265, 4790, 6530, 9580, 13060, 20597, 28079, 41194, 56158, 82388, 102985, 112316, 140395, 205970, 280790, 312787, 411940, 561580, 625574, 1251148, 1563935, 3127870, 6255740, 13449841, 26899682, 53799364, 67249205, 134498410, 268996820]

約数ペア:

[(1, 268996820), (2, 134498410), (4, 67249205), (5, 53799364), (10, 26899682), (20, 13449841), (43, 6255740), (86, 3127870), (172, 1563935), (215, 1251148), (430, 625574), (479, 561580), (653, 411940), (860, 312787), (958, 280790), (1306, 205970), (1916, 140395), (2395, 112316), (2612, 102985), (3265, 82388), (4790, 56158), (6530, 41194), (9580, 28079), (13060, 20597)]