20121695

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 26940480

約数和(自身を除く): 6818785

約数列:

[1, 5, 11, 55, 79, 121, 395, 421, 605, 869, 2105, 4345, 4631, 9559, 23155, 33259, 47795, 50941, 166295, 254705, 365849, 1829245, 4024339, 20121695]

約数ペア:

[(1, 20121695), (5, 4024339), (11, 1829245), (55, 365849), (79, 254705), (121, 166295), (395, 50941), (421, 47795), (605, 33259), (869, 23155), (2105, 9559), (4345, 4631)]