80526440

素因数分解:

$2^3\times 5^1\times {\mathrm{1399}}^1\times {\mathrm{1439}}^1$

素因数の和:2849

約数の個数: 32

約数和(自身を含む): 181440000

約数和(自身を除く): 100913560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1399, 1439, 2798, 2878, 5596, 5756, 6995, 7195, 11192, 11512, 13990, 14390, 27980, 28780, 55960, 57560, 2013161, 4026322, 8052644, 10065805, 16105288, 20131610, 40263220, 80526440]

約数ペア:

[(1, 80526440), (2, 40263220), (4, 20131610), (5, 16105288), (8, 10065805), (10, 8052644), (20, 4026322), (40, 2013161), (1399, 57560), (1439, 55960), (2798, 28780), (2878, 27980), (5596, 14390), (5756, 13990), (6995, 11512), (7195, 11192)]