221372181

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{487}}^1\times {\mathrm{2971}}^1$

素因数の和:3481

約数の個数: 24

約数和(自身を含む): 339378624

約数和(自身を除く): 118006443

約数列:

[1, 3, 9, 17, 51, 153, 487, 1461, 2971, 4383, 8279, 8913, 24837, 26739, 50507, 74511, 151521, 454563, 1446877, 4340631, 13021893, 24596909, 73790727, 221372181]

約数ペア:

[(1, 221372181), (3, 73790727), (9, 24596909), (17, 13021893), (51, 4340631), (153, 1446877), (487, 454563), (1461, 151521), (2971, 74511), (4383, 50507), (8279, 26739), (8913, 24837)]