25601920

素因数分解:

$2^7\times 5^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 61934400

約数和(自身を除く): 36332480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 320, 367, 436, 545, 640, 734, 872, 1090, 1468, 1744, 1835, 2180, 2936, 3488, 3670, 4360, 5872, 6976, 7340, 8720, 11744, 13952, 14680, 17440, 23488, 29360, 34880, 40003, 46976, 58720, 69760, 80006, 117440, 160012, 200015, 234880, 320024, 400030, 640048, 800060, 1280096, 1600120, 2560192, 3200240, 5120384, 6400480, 12800960, 25601920]

約数ペア:

[(1, 25601920), (2, 12800960), (4, 6400480), (5, 5120384), (8, 3200240), (10, 2560192), (16, 1600120), (20, 1280096), (32, 800060), (40, 640048), (64, 400030), (80, 320024), (109, 234880), (128, 200015), (160, 160012), (218, 117440), (320, 80006), (367, 69760), (436, 58720), (545, 46976), (640, 40003), (734, 34880), (872, 29360), (1090, 23488), (1468, 17440), (1744, 14680), (1835, 13952), (2180, 11744), (2936, 8720), (3488, 7340), (3670, 6976), (4360, 5872)]