18978486

素因数分解:

$2^1\times 3^1\times {\mathrm{79}}^1\times {\mathrm{40039}}^1$

素因数の和:40123

約数の個数: 16

約数和(自身を含む): 38438400

約数和(自身を除く): 19459914

約数列:

[1, 2, 3, 6, 79, 158, 237, 474, 40039, 80078, 120117, 240234, 3163081, 6326162, 9489243, 18978486]

約数ペア:

[(1, 18978486), (2, 9489243), (3, 6326162), (6, 3163081), (79, 240234), (158, 120117), (237, 80078), (474, 40039)]