20731648

素因数分解:

$2^8\times 7^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 49448448

約数和(自身を除く): 28716800

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 256, 322, 368, 448, 503, 644, 736, 896, 1006, 1288, 1472, 1792, 2012, 2576, 2944, 3521, 4024, 5152, 5888, 7042, 8048, 10304, 11569, 14084, 16096, 20608, 23138, 28168, 32192, 41216, 46276, 56336, 64384, 80983, 92552, 112672, 128768, 161966, 185104, 225344, 323932, 370208, 450688, 647864, 740416, 901376, 1295728, 1480832, 2591456, 2961664, 5182912, 10365824, 20731648]

約数ペア:

[(1, 20731648), (2, 10365824), (4, 5182912), (7, 2961664), (8, 2591456), (14, 1480832), (16, 1295728), (23, 901376), (28, 740416), (32, 647864), (46, 450688), (56, 370208), (64, 323932), (92, 225344), (112, 185104), (128, 161966), (161, 128768), (184, 112672), (224, 92552), (256, 80983), (322, 64384), (368, 56336), (448, 46276), (503, 41216), (644, 32192), (736, 28168), (896, 23138), (1006, 20608), (1288, 16096), (1472, 14084), (1792, 11569), (2012, 10304), (2576, 8048), (2944, 7042), (3521, 5888), (4024, 5152)]