18702957

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9787}}^1$

素因数の和:9817

約数の個数: 24

約数和(自身を含む): 31243296

約数和(自身を除く): 12540339

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 9787, 29361, 68509, 127231, 205527, 381693, 479563, 890617, 1438689, 2671851, 6234319, 18702957]

約数ペア:

[(1, 18702957), (3, 6234319), (7, 2671851), (13, 1438689), (21, 890617), (39, 479563), (49, 381693), (91, 205527), (147, 127231), (273, 68509), (637, 29361), (1911, 9787)]