20407218

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{261631}}^1$

素因数の和:261649

約数の個数: 16

約数和(自身を含む): 43954176

約数和(自身を除く): 23546958

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 261631, 523262, 784893, 1569786, 3401203, 6802406, 10203609, 20407218]

約数ペア:

[(1, 20407218), (2, 10203609), (3, 6802406), (6, 3401203), (13, 1569786), (26, 784893), (39, 523262), (78, 261631)]