217380921

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{491}}^1\times {\mathrm{8681}}^1$

素因数の和:9192

約数の個数: 16

約数和(自身を含む): 307551168

約数和(自身を除く): 90170247

約数列:

[1, 3, 17, 51, 491, 1473, 8347, 8681, 25041, 26043, 147577, 442731, 4262371, 12787113, 72460307, 217380921]

約数ペア:

[(1, 217380921), (3, 72460307), (17, 12787113), (51, 4262371), (491, 442731), (1473, 147577), (8347, 26043), (8681, 25041)]