12981388

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2953}}^1$

素因数の和:3121

約数の個数: 24

約数和(自身を含む): 26136992

約数和(自身を除く): 13155604

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 2953, 4396, 5906, 11812, 20671, 41342, 82684, 463621, 927242, 1854484, 3245347, 6490694, 12981388]

約数ペア:

[(1, 12981388), (2, 6490694), (4, 3245347), (7, 1854484), (14, 927242), (28, 463621), (157, 82684), (314, 41342), (628, 20671), (1099, 11812), (2198, 5906), (2953, 4396)]