20802945128

素因数分解:

$2^3\times 7^1\times {\mathrm{1087}}^1\times {\mathrm{341749}}^1$

素因数の和:342849

約数の個数: 32

約数和(自身を含む): 44618880000

約数和(自身を除く): 23815934872

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 1087, 2174, 4348, 7609, 8696, 15218, 30436, 60872, 341749, 683498, 1366996, 2392243, 2733992, 4784486, 9568972, 19137944, 371481163, 742962326, 1485924652, 2600368141, 2971849304, 5200736282, 10401472564, 20802945128]

約数ペア:

[(1, 20802945128), (2, 10401472564), (4, 5200736282), (7, 2971849304), (8, 2600368141), (14, 1485924652), (28, 742962326), (56, 371481163), (1087, 19137944), (2174, 9568972), (4348, 4784486), (7609, 2733992), (8696, 2392243), (15218, 1366996), (30436, 683498), (60872, 341749)]