138908560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{248051}}^1$

素因数の和:248071

約数の個数: 40

約数和(自身を含む): 369101376

約数和(自身を除く): 230192816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 248051, 496102, 992204, 1240255, 1736357, 1984408, 2480510, 3472714, 3968816, 4961020, 6945428, 8681785, 9922040, 13890856, 17363570, 19844080, 27781712, 34727140, 69454280, 138908560]

約数ペア:

[(1, 138908560), (2, 69454280), (4, 34727140), (5, 27781712), (7, 19844080), (8, 17363570), (10, 13890856), (14, 9922040), (16, 8681785), (20, 6945428), (28, 4961020), (35, 3968816), (40, 3472714), (56, 2480510), (70, 1984408), (80, 1736357), (112, 1240255), (140, 992204), (280, 496102), (560, 248051)]