21000895544

素因数分解:

$2^3\times {\mathrm{1259}}^1\times {\mathrm{2085077}}^1$

素因数の和:2086342

約数の個数: 16

約数和(自身を含む): 39407974200

約数和(自身を除く): 18407078656

約数列:

[1, 2, 4, 8, 1259, 2518, 5036, 10072, 2085077, 4170154, 8340308, 16680616, 2625111943, 5250223886, 10500447772, 21000895544]

約数ペア:

[(1, 21000895544), (2, 10500447772), (4, 5250223886), (8, 2625111943), (1259, 16680616), (2518, 8340308), (5036, 4170154), (10072, 2085077)]