1620005960

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{371561}}^1$

素因数の和:371681

約数の個数: 32

約数和(自身を含む): 3678463800

約数和(自身を除く): 2058457840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 371561, 743122, 1486244, 1857805, 2972488, 3715610, 7431220, 14862440, 40500149, 81000298, 162000596, 202500745, 324001192, 405001490, 810002980, 1620005960]

約数ペア:

[(1, 1620005960), (2, 810002980), (4, 405001490), (5, 324001192), (8, 202500745), (10, 162000596), (20, 81000298), (40, 40500149), (109, 14862440), (218, 7431220), (436, 3715610), (545, 2972488), (872, 1857805), (1090, 1486244), (2180, 743122), (4360, 371561)]