251291215

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{3761}}^1$

素因数の和:3879

約数の個数: 32

約数和(自身を含む): 364041216

約数和(自身を除く): 112750001

約数列:

[1, 5, 7, 23, 35, 83, 115, 161, 415, 581, 805, 1909, 2905, 3761, 9545, 13363, 18805, 26327, 66815, 86503, 131635, 312163, 432515, 605521, 1560815, 2185141, 3027605, 7179749, 10925705, 35898745, 50258243, 251291215]

約数ペア:

[(1, 251291215), (5, 50258243), (7, 35898745), (23, 10925705), (35, 7179749), (83, 3027605), (115, 2185141), (161, 1560815), (415, 605521), (581, 432515), (805, 312163), (1909, 131635), (2905, 86503), (3761, 66815), (9545, 26327), (13363, 18805)]