21952971

素因数分解:

$3^3\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:137

約数の個数: 48

約数和(自身を含む): 35834400

約数和(自身を除く): 13881429

約数列:

[1, 3, 9, 23, 27, 29, 53, 69, 87, 159, 207, 261, 477, 529, 621, 667, 783, 1219, 1431, 1537, 1587, 2001, 3657, 4611, 4761, 6003, 10971, 13833, 14283, 15341, 18009, 28037, 32913, 35351, 41499, 46023, 84111, 106053, 138069, 252333, 318159, 414207, 756999, 813073, 954477, 2439219, 7317657, 21952971]

約数ペア:

[(1, 21952971), (3, 7317657), (9, 2439219), (23, 954477), (27, 813073), (29, 756999), (53, 414207), (69, 318159), (87, 252333), (159, 138069), (207, 106053), (261, 84111), (477, 46023), (529, 41499), (621, 35351), (667, 32913), (783, 28037), (1219, 18009), (1431, 15341), (1537, 14283), (1587, 13833), (2001, 10971), (3657, 6003), (4611, 4761)]