28249221

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 52899840

約数和(自身を除く): 24650619

約数列:

[1, 3, 7, 11, 13, 21, 23, 33, 39, 69, 77, 91, 143, 161, 231, 253, 273, 299, 409, 429, 483, 759, 897, 1001, 1227, 1771, 2093, 2863, 3003, 3289, 4499, 5313, 5317, 6279, 8589, 9407, 9867, 13497, 15951, 23023, 28221, 31493, 37219, 58487, 65849, 69069, 94479, 103477, 111657, 122291, 175461, 197547, 310431, 366873, 409409, 724339, 856037, 1228227, 1345201, 2173017, 2568111, 4035603, 9416407, 28249221]

約数ペア:

[(1, 28249221), (3, 9416407), (7, 4035603), (11, 2568111), (13, 2173017), (21, 1345201), (23, 1228227), (33, 856037), (39, 724339), (69, 409409), (77, 366873), (91, 310431), (143, 197547), (161, 175461), (231, 122291), (253, 111657), (273, 103477), (299, 94479), (409, 69069), (429, 65849), (483, 58487), (759, 37219), (897, 31493), (1001, 28221), (1227, 23023), (1771, 15951), (2093, 13497), (2863, 9867), (3003, 9407), (3289, 8589), (4499, 6279), (5313, 5317)]