21770727

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 33882624

約数和(自身を除く): 12111897

約数列:

[1, 3, 11, 17, 33, 51, 151, 187, 257, 453, 561, 771, 1661, 2567, 2827, 4369, 4983, 7701, 8481, 13107, 28237, 38807, 48059, 84711, 116421, 144177, 426877, 659719, 1280631, 1979157, 7256909, 21770727]

約数ペア:

[(1, 21770727), (3, 7256909), (11, 1979157), (17, 1280631), (33, 659719), (51, 426877), (151, 144177), (187, 116421), (257, 84711), (453, 48059), (561, 38807), (771, 28237), (1661, 13107), (2567, 8481), (2827, 7701), (4369, 4983)]