21013479

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{2693}}^1$

素因数の和:2736

約数の個数: 24

約数和(自身を含む): 33082320

約数和(自身を除く): 12068841

約数列:

[1, 3, 9, 17, 27, 51, 153, 289, 459, 867, 2601, 2693, 7803, 8079, 24237, 45781, 72711, 137343, 412029, 778277, 1236087, 2334831, 7004493, 21013479]

約数ペア:

[(1, 21013479), (3, 7004493), (9, 2334831), (17, 1236087), (27, 778277), (51, 412029), (153, 137343), (289, 72711), (459, 45781), (867, 24237), (2601, 8079), (2693, 7803)]