20806041605

素因数分解:

$5^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1\times {\mathrm{223}}^1\times {\mathrm{647}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 25416695808

約数和(自身を除く): 4610654203

約数列:

[1, 5, 151, 191, 223, 647, 755, 955, 1115, 3235, 28841, 33673, 42593, 97697, 123577, 144205, 144281, 168365, 212965, 488485, 617885, 721405, 6431543, 18660127, 21786431, 27557671, 32157715, 93300635, 108932155, 137788355, 4161208321, 20806041605]

約数ペア:

[(1, 20806041605), (5, 4161208321), (151, 137788355), (191, 108932155), (223, 93300635), (647, 32157715), (755, 27557671), (955, 21786431), (1115, 18660127), (3235, 6431543), (28841, 721405), (33673, 617885), (42593, 488485), (97697, 212965), (123577, 168365), (144205, 144281)]