80442320

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20521}}^1$

素因数の和:20548

約数の個数: 60

約数和(自身を含む): 217574244

約数和(自身を除く): 137131924

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20521, 41042, 82084, 102605, 143647, 164168, 205210, 287294, 328336, 410420, 574588, 718235, 820840, 1005529, 1149176, 1436470, 1641680, 2011058, 2298352, 2872940, 4022116, 5027645, 5745880, 8044232, 10055290, 11491760, 16088464, 20110580, 40221160, 80442320]

約数ペア:

[(1, 80442320), (2, 40221160), (4, 20110580), (5, 16088464), (7, 11491760), (8, 10055290), (10, 8044232), (14, 5745880), (16, 5027645), (20, 4022116), (28, 2872940), (35, 2298352), (40, 2011058), (49, 1641680), (56, 1436470), (70, 1149176), (80, 1005529), (98, 820840), (112, 718235), (140, 574588), (196, 410420), (245, 328336), (280, 287294), (392, 205210), (490, 164168), (560, 143647), (784, 102605), (980, 82084), (1960, 41042), (3920, 20521)]