20055808

素因数分解:

$2^8\times {\mathrm{157}}^1\times {\mathrm{499}}^1$

素因数の和:672

約数の個数: 36

約数和(自身を含む): 40369000

約数和(自身を除く): 20313192

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 157, 256, 314, 499, 628, 998, 1256, 1996, 2512, 3992, 5024, 7984, 10048, 15968, 20096, 31936, 40192, 63872, 78343, 127744, 156686, 313372, 626744, 1253488, 2506976, 5013952, 10027904, 20055808]

約数ペア:

[(1, 20055808), (2, 10027904), (4, 5013952), (8, 2506976), (16, 1253488), (32, 626744), (64, 313372), (128, 156686), (157, 127744), (256, 78343), (314, 63872), (499, 40192), (628, 31936), (998, 20096), (1256, 15968), (1996, 10048), (2512, 7984), (3992, 5024)]