20768951

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 26593920

約数和(自身を除く): 5824969

約数列:

[1, 7, 17, 37, 53, 89, 119, 259, 371, 623, 629, 901, 1513, 1961, 3293, 4403, 4717, 6307, 10591, 13727, 23051, 33019, 33337, 55981, 80189, 174529, 233359, 391867, 561323, 1221703, 2966993, 20768951]

約数ペア:

[(1, 20768951), (7, 2966993), (17, 1221703), (37, 561323), (53, 391867), (89, 233359), (119, 174529), (259, 80189), (371, 55981), (623, 33337), (629, 33019), (901, 23051), (1513, 13727), (1961, 10591), (3293, 6307), (4403, 4717)]