28000640

素因数分解:

$2^7\times 5^1\times {\mathrm{67}}^1\times {\mathrm{653}}^1$

素因数の和:739

約数の個数: 64

約数和(自身を含む): 68042160

約数和(自身を除く): 40041520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 268, 320, 335, 536, 640, 653, 670, 1072, 1306, 1340, 2144, 2612, 2680, 3265, 4288, 5224, 5360, 6530, 8576, 10448, 10720, 13060, 20896, 21440, 26120, 41792, 42880, 43751, 52240, 83584, 87502, 104480, 175004, 208960, 218755, 350008, 417920, 437510, 700016, 875020, 1400032, 1750040, 2800064, 3500080, 5600128, 7000160, 14000320, 28000640]

約数ペア:

[(1, 28000640), (2, 14000320), (4, 7000160), (5, 5600128), (8, 3500080), (10, 2800064), (16, 1750040), (20, 1400032), (32, 875020), (40, 700016), (64, 437510), (67, 417920), (80, 350008), (128, 218755), (134, 208960), (160, 175004), (268, 104480), (320, 87502), (335, 83584), (536, 52240), (640, 43751), (653, 42880), (670, 41792), (1072, 26120), (1306, 21440), (1340, 20896), (2144, 13060), (2612, 10720), (2680, 10448), (3265, 8576), (4288, 6530), (5224, 5360)]