25264640

素因数分解:

$2^9\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:233

約数の個数: 80

約数和(自身を含む): 61871040

約数和(自身を除く): 36606400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 139, 142, 160, 256, 278, 284, 320, 355, 512, 556, 568, 640, 695, 710, 1112, 1136, 1280, 1390, 1420, 2224, 2272, 2560, 2780, 2840, 4448, 4544, 5560, 5680, 8896, 9088, 9869, 11120, 11360, 17792, 18176, 19738, 22240, 22720, 35584, 36352, 39476, 44480, 45440, 49345, 71168, 78952, 88960, 90880, 98690, 157904, 177920, 181760, 197380, 315808, 355840, 394760, 631616, 789520, 1263232, 1579040, 2526464, 3158080, 5052928, 6316160, 12632320, 25264640]

約数ペア:

[(1, 25264640), (2, 12632320), (4, 6316160), (5, 5052928), (8, 3158080), (10, 2526464), (16, 1579040), (20, 1263232), (32, 789520), (40, 631616), (64, 394760), (71, 355840), (80, 315808), (128, 197380), (139, 181760), (142, 177920), (160, 157904), (256, 98690), (278, 90880), (284, 88960), (320, 78952), (355, 71168), (512, 49345), (556, 45440), (568, 44480), (640, 39476), (695, 36352), (710, 35584), (1112, 22720), (1136, 22240), (1280, 19738), (1390, 18176), (1420, 17792), (2224, 11360), (2272, 11120), (2560, 9869), (2780, 9088), (2840, 8896), (4448, 5680), (4544, 5560)]