156420005

素因数分解:

$5^1\times 7^3\times {\mathrm{223}}^1\times {\mathrm{409}}^1$

素因数の和:658

約数の個数: 32

約数和(自身を含む): 220416000

約数和(自身を除く): 63995995

約数列:

[1, 5, 7, 35, 49, 223, 245, 343, 409, 1115, 1561, 1715, 2045, 2863, 7805, 10927, 14315, 20041, 54635, 76489, 91207, 100205, 140287, 382445, 456035, 638449, 701435, 3192245, 4469143, 22345715, 31284001, 156420005]

約数ペア:

[(1, 156420005), (5, 31284001), (7, 22345715), (35, 4469143), (49, 3192245), (223, 701435), (245, 638449), (343, 456035), (409, 382445), (1115, 140287), (1561, 100205), (1715, 91207), (2045, 76489), (2863, 54635), (7805, 20041), (10927, 14315)]