18918978

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{242551}}^1$

素因数の和:242569

約数の個数: 16

約数和(自身を含む): 40748736

約数和(自身を除く): 21829758

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 242551, 485102, 727653, 1455306, 3153163, 6306326, 9459489, 18918978]

約数ペア:

[(1, 18918978), (2, 9459489), (3, 6306326), (6, 3153163), (13, 1455306), (26, 727653), (39, 485102), (78, 242551)]