21214545

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 39951360

約数和(自身を除く): 18736815

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 67, 95, 101, 165, 201, 209, 285, 303, 335, 505, 627, 737, 1005, 1045, 1111, 1273, 1515, 1919, 2211, 3135, 3333, 3685, 3819, 5555, 5757, 6365, 6767, 9595, 11055, 14003, 16665, 19095, 20301, 21109, 28785, 33835, 42009, 63327, 70015, 74437, 101505, 105545, 128573, 210045, 223311, 316635, 372185, 385719, 642865, 1116555, 1414303, 1928595, 4242909, 7071515, 21214545]

約数ペア:

[(1, 21214545), (3, 7071515), (5, 4242909), (11, 1928595), (15, 1414303), (19, 1116555), (33, 642865), (55, 385719), (57, 372185), (67, 316635), (95, 223311), (101, 210045), (165, 128573), (201, 105545), (209, 101505), (285, 74437), (303, 70015), (335, 63327), (505, 42009), (627, 33835), (737, 28785), (1005, 21109), (1045, 20301), (1111, 19095), (1273, 16665), (1515, 14003), (1919, 11055), (2211, 9595), (3135, 6767), (3333, 6365), (3685, 5757), (3819, 5555)]