12880280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 33445440

約数和(自身を除く): 20565160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 157, 280, 293, 314, 586, 628, 785, 1099, 1172, 1256, 1465, 1570, 2051, 2198, 2344, 2930, 3140, 4102, 4396, 5495, 5860, 6280, 8204, 8792, 10255, 10990, 11720, 16408, 20510, 21980, 41020, 43960, 46001, 82040, 92002, 184004, 230005, 322007, 368008, 460010, 644014, 920020, 1288028, 1610035, 1840040, 2576056, 3220070, 6440140, 12880280]

約数ペア:

[(1, 12880280), (2, 6440140), (4, 3220070), (5, 2576056), (7, 1840040), (8, 1610035), (10, 1288028), (14, 920020), (20, 644014), (28, 460010), (35, 368008), (40, 322007), (56, 230005), (70, 184004), (140, 92002), (157, 82040), (280, 46001), (293, 43960), (314, 41020), (586, 21980), (628, 20510), (785, 16408), (1099, 11720), (1172, 10990), (1256, 10255), (1465, 8792), (1570, 8204), (2051, 6280), (2198, 5860), (2344, 5495), (2930, 4396), (3140, 4102)]