21241712

素因数分解:

$2^4\times {\mathrm{811}}^1\times {\mathrm{1637}}^1$

素因数の和:2456

約数の個数: 20

約数和(自身を含む): 41231736

約数和(自身を除く): 19990024

約数列:

[1, 2, 4, 8, 16, 811, 1622, 1637, 3244, 3274, 6488, 6548, 12976, 13096, 26192, 1327607, 2655214, 5310428, 10620856, 21241712]

約数ペア:

[(1, 21241712), (2, 10620856), (4, 5310428), (8, 2655214), (16, 1327607), (811, 26192), (1622, 13096), (1637, 12976), (3244, 6548), (3274, 6488)]