21697947

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2833}}^1$

素因数の和:2899

約数の個数: 24

約数和(自身を含む): 33599904

約数和(自身を除く): 11901957

約数列:

[1, 3, 9, 23, 37, 69, 111, 207, 333, 851, 2553, 2833, 7659, 8499, 25497, 65159, 104821, 195477, 314463, 586431, 943389, 2410883, 7232649, 21697947]

約数ペア:

[(1, 21697947), (3, 7232649), (9, 2410883), (23, 943389), (37, 586431), (69, 314463), (111, 195477), (207, 104821), (333, 65159), (851, 25497), (2553, 8499), (2833, 7659)]