21111705

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9199}}^1$

素因数の和:9230

約数の個数: 32

約数和(自身を含む): 39744000

約数和(自身を除く): 18632295

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9199, 27597, 45995, 82791, 137985, 156383, 248373, 413955, 469149, 781915, 1241865, 1407447, 2345745, 4222341, 7037235, 21111705]

約数ペア:

[(1, 21111705), (3, 7037235), (5, 4222341), (9, 2345745), (15, 1407447), (17, 1241865), (27, 781915), (45, 469149), (51, 413955), (85, 248373), (135, 156383), (153, 137985), (255, 82791), (459, 45995), (765, 27597), (2295, 9199)]