20690432

素因数分解:

$2^9\times 7^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:299

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 28806400

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 251, 256, 322, 368, 448, 502, 512, 644, 736, 896, 1004, 1288, 1472, 1757, 1792, 2008, 2576, 2944, 3514, 3584, 4016, 5152, 5773, 5888, 7028, 8032, 10304, 11546, 11776, 14056, 16064, 20608, 23092, 28112, 32128, 40411, 41216, 46184, 56224, 64256, 80822, 82432, 92368, 112448, 128512, 161644, 184736, 224896, 323288, 369472, 449792, 646576, 738944, 899584, 1293152, 1477888, 2586304, 2955776, 5172608, 10345216, 20690432]

約数ペア:

[(1, 20690432), (2, 10345216), (4, 5172608), (7, 2955776), (8, 2586304), (14, 1477888), (16, 1293152), (23, 899584), (28, 738944), (32, 646576), (46, 449792), (56, 369472), (64, 323288), (92, 224896), (112, 184736), (128, 161644), (161, 128512), (184, 112448), (224, 92368), (251, 82432), (256, 80822), (322, 64256), (368, 56224), (448, 46184), (502, 41216), (512, 40411), (644, 32128), (736, 28112), (896, 23092), (1004, 20608), (1288, 16064), (1472, 14056), (1757, 11776), (1792, 11546), (2008, 10304), (2576, 8032), (2944, 7028), (3514, 5888), (3584, 5773), (4016, 5152)]