20155635

素因数分解:

$3^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 37031904

約数和(自身を除く): 16876269

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 159, 243, 265, 313, 405, 477, 795, 939, 1215, 1431, 1565, 2385, 2817, 4293, 4695, 7155, 8451, 12879, 14085, 16589, 21465, 25353, 42255, 49767, 64395, 76059, 82945, 126765, 149301, 248835, 380295, 447903, 746505, 1343709, 2239515, 4031127, 6718545, 20155635]

約数ペア:

[(1, 20155635), (3, 6718545), (5, 4031127), (9, 2239515), (15, 1343709), (27, 746505), (45, 447903), (53, 380295), (81, 248835), (135, 149301), (159, 126765), (243, 82945), (265, 76059), (313, 64395), (405, 49767), (477, 42255), (795, 25353), (939, 21465), (1215, 16589), (1431, 14085), (1565, 12879), (2385, 8451), (2817, 7155), (4293, 4695)]