20519785

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2609}}^1$

素因数の和:2649

約数の個数: 24

約数和(自身を含む): 29158920

約数和(自身を除く): 8639135

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 605, 715, 1573, 2609, 7865, 13045, 28699, 33917, 143495, 169585, 315689, 373087, 1578445, 1865435, 4103957, 20519785]

約数ペア:

[(1, 20519785), (5, 4103957), (11, 1865435), (13, 1578445), (55, 373087), (65, 315689), (121, 169585), (143, 143495), (605, 33917), (715, 28699), (1573, 13045), (2609, 7865)]