638987078

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{71}}^2\times {\mathrm{1039}}^1$

素因数の和:1244

約数の個数: 24

約数和(自身を含む): 989058720

約数和(自身を除く): 350071642

約数列:

[1, 2, 61, 71, 122, 142, 1039, 2078, 4331, 5041, 8662, 10082, 63379, 73769, 126758, 147538, 307501, 615002, 4499909, 5237599, 8999818, 10475198, 319493539, 638987078]

約数ペア:

[(1, 638987078), (2, 319493539), (61, 10475198), (71, 8999818), (122, 5237599), (142, 4499909), (1039, 615002), (2078, 307501), (4331, 147538), (5041, 126758), (8662, 73769), (10082, 63379)]