20740872016

素因数分解:

$2^4\times {\mathrm{839}}^1\times {\mathrm{1545059}}^1$

素因数の和:1545906

約数の個数: 20

約数和(自身を含む): 40233362400

約数和(自身を除く): 19492490384

約数列:

[1, 2, 4, 8, 16, 839, 1678, 3356, 6712, 13424, 1545059, 3090118, 6180236, 12360472, 24720944, 1296304501, 2592609002, 5185218004, 10370436008, 20740872016]

約数ペア:

[(1, 20740872016), (2, 10370436008), (4, 5185218004), (8, 2592609002), (16, 1296304501), (839, 24720944), (1678, 12360472), (3356, 6180236), (6712, 3090118), (13424, 1545059)]