208398421

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{35149}}^1$

素因数の和:35185

約数の個数: 18

約数和(自身を含む): 266472150

約数和(自身を除く): 58073729

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 5929, 35149, 246043, 386639, 1722301, 2706473, 4253029, 18945311, 29771203, 208398421]

約数ペア:

[(1, 208398421), (7, 29771203), (11, 18945311), (49, 4253029), (77, 2706473), (121, 1722301), (539, 386639), (847, 246043), (5929, 35149)]