20661436971

素因数分解:

$3^2\times 7^2\times {\mathrm{641}}^1\times {\mathrm{73091}}^1$

素因数の和:73752

約数の個数: 36

約数和(自身を含む): 34771472424

約数和(自身を除く): 14110035453

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 641, 1923, 4487, 5769, 13461, 31409, 40383, 73091, 94227, 219273, 282681, 511637, 657819, 1534911, 3581459, 4604733, 10744377, 32233131, 46851331, 140553993, 327959317, 421661979, 983877951, 2295715219, 2951633853, 6887145657, 20661436971]

約数ペア:

[(1, 20661436971), (3, 6887145657), (7, 2951633853), (9, 2295715219), (21, 983877951), (49, 421661979), (63, 327959317), (147, 140553993), (441, 46851331), (641, 32233131), (1923, 10744377), (4487, 4604733), (5769, 3581459), (13461, 1534911), (31409, 657819), (40383, 511637), (73091, 282681), (94227, 219273)]