20679728

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{241}}^1$

素因数の和:453

約数の個数: 40

約数和(自身を含む): 41771136

約数和(自身を除く): 21091408

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 173, 241, 248, 346, 482, 496, 692, 964, 1384, 1928, 2768, 3856, 5363, 7471, 10726, 14942, 21452, 29884, 41693, 42904, 59768, 83386, 85808, 119536, 166772, 333544, 667088, 1292483, 2584966, 5169932, 10339864, 20679728]

約数ペア:

[(1, 20679728), (2, 10339864), (4, 5169932), (8, 2584966), (16, 1292483), (31, 667088), (62, 333544), (124, 166772), (173, 119536), (241, 85808), (248, 83386), (346, 59768), (482, 42904), (496, 41693), (692, 29884), (964, 21452), (1384, 14942), (1928, 10726), (2768, 7471), (3856, 5363)]