20787680

素因数分解:

$2^5\times 5^1\times {\mathrm{173}}^1\times {\mathrm{751}}^1$

素因数の和:939

約数の個数: 48

約数和(自身を含む): 49460544

約数和(自身を除く): 28672864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 173, 346, 692, 751, 865, 1384, 1502, 1730, 2768, 3004, 3460, 3755, 5536, 6008, 6920, 7510, 12016, 13840, 15020, 24032, 27680, 30040, 60080, 120160, 129923, 259846, 519692, 649615, 1039384, 1299230, 2078768, 2598460, 4157536, 5196920, 10393840, 20787680]

約数ペア:

[(1, 20787680), (2, 10393840), (4, 5196920), (5, 4157536), (8, 2598460), (10, 2078768), (16, 1299230), (20, 1039384), (32, 649615), (40, 519692), (80, 259846), (160, 129923), (173, 120160), (346, 60080), (692, 30040), (751, 27680), (865, 24032), (1384, 15020), (1502, 13840), (1730, 12016), (2768, 7510), (3004, 6920), (3460, 6008), (3755, 5536)]