165640760

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{37991}}^1$

素因数の和:38111

約数の個数: 32

約数和(自身を含む): 376120800

約数和(自身を除く): 210480040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 37991, 75982, 151964, 189955, 303928, 379910, 759820, 1519640, 4141019, 8282038, 16564076, 20705095, 33128152, 41410190, 82820380, 165640760]

約数ペア:

[(1, 165640760), (2, 82820380), (4, 41410190), (5, 33128152), (8, 20705095), (10, 16564076), (20, 8282038), (40, 4141019), (109, 1519640), (218, 759820), (436, 379910), (545, 303928), (872, 189955), (1090, 151964), (2180, 75982), (4360, 37991)]