208389640

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{98297}}^1$

素因数の和:98361

約数の個数: 32

約数和(自身を含む): 477728280

約数和(自身を除く): 269338640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 98297, 196594, 393188, 491485, 786376, 982970, 1965940, 3931880, 5209741, 10419482, 20838964, 26048705, 41677928, 52097410, 104194820, 208389640]

約数ペア:

[(1, 208389640), (2, 104194820), (4, 52097410), (5, 41677928), (8, 26048705), (10, 20838964), (20, 10419482), (40, 5209741), (53, 3931880), (106, 1965940), (212, 982970), (265, 786376), (424, 491485), (530, 393188), (1060, 196594), (2120, 98297)]