163872440

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{21227}}^1$

素因数の和:21431

約数の個数: 32

約数和(自身を含む): 370640880

約数和(自身を除く): 206768440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 21227, 42454, 84908, 106135, 169816, 212270, 424540, 849080, 4096811, 8193622, 16387244, 20484055, 32774488, 40968110, 81936220, 163872440]

約数ペア:

[(1, 163872440), (2, 81936220), (4, 40968110), (5, 32774488), (8, 20484055), (10, 16387244), (20, 8193622), (40, 4096811), (193, 849080), (386, 424540), (772, 212270), (965, 169816), (1544, 106135), (1930, 84908), (3860, 42454), (7720, 21227)]