20739279

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 33367040

約数和(自身を除く): 12627761

約数列:

[1, 3, 11, 19, 31, 33, 57, 93, 97, 121, 209, 291, 341, 363, 589, 627, 1023, 1067, 1767, 1843, 2299, 3007, 3201, 3751, 5529, 6479, 6897, 9021, 11253, 11737, 19437, 20273, 33077, 35211, 57133, 60819, 71269, 99231, 171399, 213807, 223003, 363847, 628463, 669009, 1091541, 1885389, 6913093, 20739279]

約数ペア:

[(1, 20739279), (3, 6913093), (11, 1885389), (19, 1091541), (31, 669009), (33, 628463), (57, 363847), (93, 223003), (97, 213807), (121, 171399), (209, 99231), (291, 71269), (341, 60819), (363, 57133), (589, 35211), (627, 33077), (1023, 20273), (1067, 19437), (1767, 11737), (1843, 11253), (2299, 9021), (3007, 6897), (3201, 6479), (3751, 5529)]