21615008

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{487}}^1$

素因数の和:589

約数の個数: 48

約数和(自身を含む): 45501120

約数和(自身を除く): 23886112

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 73, 76, 146, 152, 292, 304, 487, 584, 608, 974, 1168, 1387, 1948, 2336, 2774, 3896, 5548, 7792, 9253, 11096, 15584, 18506, 22192, 35551, 37012, 44384, 71102, 74024, 142204, 148048, 284408, 296096, 568816, 675469, 1137632, 1350938, 2701876, 5403752, 10807504, 21615008]

約数ペア:

[(1, 21615008), (2, 10807504), (4, 5403752), (8, 2701876), (16, 1350938), (19, 1137632), (32, 675469), (38, 568816), (73, 296096), (76, 284408), (146, 148048), (152, 142204), (292, 74024), (304, 71102), (487, 44384), (584, 37012), (608, 35551), (974, 22192), (1168, 18506), (1387, 15584), (1948, 11096), (2336, 9253), (2774, 7792), (3896, 5548)]