20887808

素因数分解:

$2^8\times {\mathrm{139}}^1\times {\mathrm{587}}^1$

素因数の和:742

約数の個数: 36

約数和(自身を含む): 42065520

約数和(自身を除く): 21177712

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 139, 256, 278, 556, 587, 1112, 1174, 2224, 2348, 4448, 4696, 8896, 9392, 17792, 18784, 35584, 37568, 75136, 81593, 150272, 163186, 326372, 652744, 1305488, 2610976, 5221952, 10443904, 20887808]

約数ペア:

[(1, 20887808), (2, 10443904), (4, 5221952), (8, 2610976), (16, 1305488), (32, 652744), (64, 326372), (128, 163186), (139, 150272), (256, 81593), (278, 75136), (556, 37568), (587, 35584), (1112, 18784), (1174, 17792), (2224, 9392), (2348, 8896), (4448, 4696)]