256543404

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{11831}}^1$

素因数の和:11990

約数の個数: 48

約数和(自身を含む): 649340160

約数和(自身を除く): 392796756

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 139, 156, 278, 417, 556, 834, 1668, 1807, 3614, 5421, 7228, 10842, 11831, 21684, 23662, 35493, 47324, 70986, 141972, 153803, 307606, 461409, 615212, 922818, 1644509, 1845636, 3289018, 4933527, 6578036, 9867054, 19734108, 21378617, 42757234, 64135851, 85514468, 128271702, 256543404]

約数ペア:

[(1, 256543404), (2, 128271702), (3, 85514468), (4, 64135851), (6, 42757234), (12, 21378617), (13, 19734108), (26, 9867054), (39, 6578036), (52, 4933527), (78, 3289018), (139, 1845636), (156, 1644509), (278, 922818), (417, 615212), (556, 461409), (834, 307606), (1668, 153803), (1807, 141972), (3614, 70986), (5421, 47324), (7228, 35493), (10842, 23662), (11831, 21684)]