20689024

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 44553600

約数和(自身を除く): 23864576

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 47, 64, 76, 94, 128, 152, 181, 188, 304, 362, 376, 608, 724, 752, 893, 1216, 1448, 1504, 1786, 2432, 2896, 3008, 3439, 3572, 5792, 6016, 6878, 7144, 8507, 11584, 13756, 14288, 17014, 23168, 27512, 28576, 34028, 55024, 57152, 68056, 110048, 114304, 136112, 161633, 220096, 272224, 323266, 440192, 544448, 646532, 1088896, 1293064, 2586128, 5172256, 10344512, 20689024]

約数ペア:

[(1, 20689024), (2, 10344512), (4, 5172256), (8, 2586128), (16, 1293064), (19, 1088896), (32, 646532), (38, 544448), (47, 440192), (64, 323266), (76, 272224), (94, 220096), (128, 161633), (152, 136112), (181, 114304), (188, 110048), (304, 68056), (362, 57152), (376, 55024), (608, 34028), (724, 28576), (752, 27512), (893, 23168), (1216, 17014), (1448, 14288), (1504, 13756), (1786, 11584), (2432, 8507), (2896, 7144), (3008, 6878), (3439, 6016), (3572, 5792)]