25507240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2050

約数の個数: 64

約数和(自身を含む): 64800000

約数和(自身を除く): 39292760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1595, 1999, 2552, 3190, 3998, 6380, 7996, 9995, 12760, 15992, 19990, 21989, 39980, 43978, 57971, 79960, 87956, 109945, 115942, 175912, 219890, 231884, 289855, 439780, 463768, 579710, 637681, 879560, 1159420, 1275362, 2318840, 2550724, 3188405, 5101448, 6376810, 12753620, 25507240]

約数ペア:

[(1, 25507240), (2, 12753620), (4, 6376810), (5, 5101448), (8, 3188405), (10, 2550724), (11, 2318840), (20, 1275362), (22, 1159420), (29, 879560), (40, 637681), (44, 579710), (55, 463768), (58, 439780), (88, 289855), (110, 231884), (116, 219890), (145, 175912), (220, 115942), (232, 109945), (290, 87956), (319, 79960), (440, 57971), (580, 43978), (638, 39980), (1160, 21989), (1276, 19990), (1595, 15992), (1999, 12760), (2552, 9995), (3190, 7996), (3998, 6380)]