20801792

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 46357920

約数和(自身を除く): 25556128

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 83, 88, 89, 128, 166, 176, 178, 256, 332, 352, 356, 664, 704, 712, 913, 979, 1328, 1408, 1424, 1826, 1958, 2656, 2816, 2848, 3652, 3916, 5312, 5696, 7304, 7387, 7832, 10624, 11392, 14608, 14774, 15664, 21248, 22784, 29216, 29548, 31328, 58432, 59096, 62656, 81257, 116864, 118192, 125312, 162514, 233728, 236384, 250624, 325028, 472768, 650056, 945536, 1300112, 1891072, 2600224, 5200448, 10400896, 20801792]

約数ペア:

[(1, 20801792), (2, 10400896), (4, 5200448), (8, 2600224), (11, 1891072), (16, 1300112), (22, 945536), (32, 650056), (44, 472768), (64, 325028), (83, 250624), (88, 236384), (89, 233728), (128, 162514), (166, 125312), (176, 118192), (178, 116864), (256, 81257), (332, 62656), (352, 59096), (356, 58432), (664, 31328), (704, 29548), (712, 29216), (913, 22784), (979, 21248), (1328, 15664), (1408, 14774), (1424, 14608), (1826, 11392), (1958, 10624), (2656, 7832), (2816, 7387), (2848, 7304), (3652, 5696), (3916, 5312)]