20896884

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:389

約数の個数: 72

約数和(自身を含む): 56259840

約数和(自身を除く): 35362956

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 137, 171, 223, 228, 274, 342, 411, 446, 548, 669, 684, 822, 892, 1233, 1338, 1644, 2007, 2466, 2603, 2676, 4014, 4237, 4932, 5206, 7809, 8028, 8474, 10412, 12711, 15618, 16948, 23427, 25422, 30551, 31236, 38133, 46854, 50844, 61102, 76266, 91653, 93708, 122204, 152532, 183306, 274959, 366612, 549918, 580469, 1099836, 1160938, 1741407, 2321876, 3482814, 5224221, 6965628, 10448442, 20896884]

約数ペア:

[(1, 20896884), (2, 10448442), (3, 6965628), (4, 5224221), (6, 3482814), (9, 2321876), (12, 1741407), (18, 1160938), (19, 1099836), (36, 580469), (38, 549918), (57, 366612), (76, 274959), (114, 183306), (137, 152532), (171, 122204), (223, 93708), (228, 91653), (274, 76266), (342, 61102), (411, 50844), (446, 46854), (548, 38133), (669, 31236), (684, 30551), (822, 25422), (892, 23427), (1233, 16948), (1338, 15618), (1644, 12711), (2007, 10412), (2466, 8474), (2603, 8028), (2676, 7809), (4014, 5206), (4237, 4932)]