21779569

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 26745768

約数和(自身を除く): 4966199

約数列:

[1, 7, 37, 41, 49, 259, 287, 293, 1517, 1813, 2009, 2051, 10619, 10841, 12013, 14357, 74333, 75887, 84091, 444481, 531209, 588637, 3111367, 21779569]

約数ペア:

[(1, 21779569), (7, 3111367), (37, 588637), (41, 531209), (49, 444481), (259, 84091), (287, 75887), (293, 74333), (1517, 14357), (1813, 12013), (2009, 10841), (2051, 10619)]