21320432

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:310

約数の個数: 80

約数和(自身を含む): 51068160

約数和(自身を除く): 29747728

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 43, 56, 76, 86, 112, 133, 152, 172, 233, 266, 301, 304, 344, 466, 532, 602, 688, 817, 932, 1064, 1204, 1631, 1634, 1864, 2128, 2408, 3262, 3268, 3728, 4427, 4816, 5719, 6524, 6536, 8854, 10019, 11438, 13048, 13072, 17708, 20038, 22876, 26096, 30989, 35416, 40076, 45752, 61978, 70133, 70832, 80152, 91504, 123956, 140266, 160304, 190361, 247912, 280532, 380722, 495824, 561064, 761444, 1122128, 1332527, 1522888, 2665054, 3045776, 5330108, 10660216, 21320432]

約数ペア:

[(1, 21320432), (2, 10660216), (4, 5330108), (7, 3045776), (8, 2665054), (14, 1522888), (16, 1332527), (19, 1122128), (28, 761444), (38, 561064), (43, 495824), (56, 380722), (76, 280532), (86, 247912), (112, 190361), (133, 160304), (152, 140266), (172, 123956), (233, 91504), (266, 80152), (301, 70832), (304, 70133), (344, 61978), (466, 45752), (532, 40076), (602, 35416), (688, 30989), (817, 26096), (932, 22876), (1064, 20038), (1204, 17708), (1631, 13072), (1634, 13048), (1864, 11438), (2128, 10019), (2408, 8854), (3262, 6536), (3268, 6524), (3728, 5719), (4427, 4816)]