28402495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{821}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 40481856

約数和(自身を除く): 12079361

約数列:

[1, 5, 11, 17, 37, 55, 85, 185, 187, 407, 629, 821, 935, 2035, 3145, 4105, 6919, 9031, 13957, 30377, 34595, 45155, 69785, 151885, 153527, 334147, 516409, 767635, 1670735, 2582045, 5680499, 28402495]

約数ペア:

[(1, 28402495), (5, 5680499), (11, 2582045), (17, 1670735), (37, 767635), (55, 516409), (85, 334147), (185, 153527), (187, 151885), (407, 69785), (629, 45155), (821, 34595), (935, 30377), (2035, 13957), (3145, 9031), (4105, 6919)]