31289979

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{659}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 54172800

約数和(自身を除く): 22882821

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 399, 659, 833, 931, 969, 1977, 2261, 2499, 2793, 4613, 6783, 11203, 12521, 13839, 15827, 32291, 33609, 37563, 47481, 78421, 87647, 96873, 212857, 235263, 262941, 548947, 613529, 638571, 1489999, 1646841, 1840587, 4469997, 10429993, 31289979]

約数ペア:

[(1, 31289979), (3, 10429993), (7, 4469997), (17, 1840587), (19, 1646841), (21, 1489999), (49, 638571), (51, 613529), (57, 548947), (119, 262941), (133, 235263), (147, 212857), (323, 96873), (357, 87647), (399, 78421), (659, 47481), (833, 37563), (931, 33609), (969, 32291), (1977, 15827), (2261, 13839), (2499, 12521), (2793, 11203), (4613, 6783)]