139244840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{497303}}^1$

素因数の和:497321

約数の個数: 32

約数和(自身を含む): 358058880

約数和(自身を除く): 218814040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 497303, 994606, 1989212, 2486515, 3481121, 3978424, 4973030, 6962242, 9946060, 13924484, 17405605, 19892120, 27848968, 34811210, 69622420, 139244840]

約数ペア:

[(1, 139244840), (2, 69622420), (4, 34811210), (5, 27848968), (7, 19892120), (8, 17405605), (10, 13924484), (14, 9946060), (20, 6962242), (28, 4973030), (35, 3978424), (40, 3481121), (56, 2486515), (70, 1989212), (140, 994606), (280, 497303)]