389664940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2783321}}^1$

素因数の和:2783337

約数の個数: 24

約数和(自身を含む): 935196192

約数和(自身を除く): 545531252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2783321, 5566642, 11133284, 13916605, 19483247, 27833210, 38966494, 55666420, 77932988, 97416235, 194832470, 389664940]

約数ペア:

[(1, 389664940), (2, 194832470), (4, 97416235), (5, 77932988), (7, 55666420), (10, 38966494), (14, 27833210), (20, 19483247), (28, 13916605), (35, 11133284), (70, 5566642), (140, 2783321)]