20491905985

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{20743}}^1$

素因数の和:20929

約数の個数: 32

約数和(自身を含む): 25928340480

約数和(自身を除く): 5436434495

約数列:

[1, 5, 41, 61, 79, 205, 305, 395, 2501, 3239, 4819, 12505, 16195, 20743, 24095, 103715, 197579, 850463, 987895, 1265323, 1638697, 4252315, 6326615, 8193485, 51878243, 67186577, 99960517, 259391215, 335932885, 499802585, 4098381197, 20491905985]

約数ペア:

[(1, 20491905985), (5, 4098381197), (41, 499802585), (61, 335932885), (79, 259391215), (205, 99960517), (305, 67186577), (395, 51878243), (2501, 8193485), (3239, 6326615), (4819, 4252315), (12505, 1638697), (16195, 1265323), (20743, 987895), (24095, 850463), (103715, 197579)]