20128774939

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1\times {\mathrm{9743}}^1$

素因数の和:10147

約数の個数: 32

約数和(自身を含む): 25196580864

約数和(自身を除く): 5067805925

約数列:

[1, 7, 13, 73, 91, 311, 511, 949, 2177, 4043, 6643, 9743, 22703, 28301, 68201, 126659, 158921, 295139, 711239, 886613, 2065973, 3030073, 4978673, 9246107, 21210511, 39390949, 64722749, 221195329, 275736643, 1548367303, 2875539277, 20128774939]

約数ペア:

[(1, 20128774939), (7, 2875539277), (13, 1548367303), (73, 275736643), (91, 221195329), (311, 64722749), (511, 39390949), (949, 21210511), (2177, 9246107), (4043, 4978673), (6643, 3030073), (9743, 2065973), (22703, 886613), (28301, 711239), (68201, 295139), (126659, 158921)]