18706681

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1321}}^1$

素因数の和:1369

約数の個数: 18

約数和(自身を含む): 23133678

約数和(自身を除く): 4426997

約数列:

[1, 7, 17, 49, 119, 289, 833, 1321, 2023, 9247, 14161, 22457, 64729, 157199, 381769, 1100393, 2672383, 18706681]

約数ペア:

[(1, 18706681), (7, 2672383), (17, 1100393), (49, 381769), (119, 157199), (289, 64729), (833, 22457), (1321, 14161), (2023, 9247)]