20954295

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1669}}^1$

素因数の和:1717

約数の個数: 40

約数和(自身を含む): 38797440

約数和(自身を除く): 17843145

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 1669, 2511, 4185, 5007, 8345, 12555, 15021, 25035, 45063, 51739, 75105, 135189, 155217, 225315, 258695, 465651, 675945, 776085, 1396953, 2328255, 4190859, 6984765, 20954295]

約数ペア:

[(1, 20954295), (3, 6984765), (5, 4190859), (9, 2328255), (15, 1396953), (27, 776085), (31, 675945), (45, 465651), (81, 258695), (93, 225315), (135, 155217), (155, 135189), (279, 75105), (405, 51739), (465, 45063), (837, 25035), (1395, 15021), (1669, 12555), (2511, 8345), (4185, 5007)]