128308740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{305497}}^1$

素因数の和:305516

約数の個数: 48

約数和(自身を含む): 410589312

約数和(自身を除く): 282280572

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 305497, 610994, 916491, 1221988, 1527485, 1832982, 2138479, 3054970, 3665964, 4276958, 4582455, 6109940, 6415437, 8553916, 9164910, 10692395, 12830874, 18329820, 21384790, 25661748, 32077185, 42769580, 64154370, 128308740]

約数ペア:

[(1, 128308740), (2, 64154370), (3, 42769580), (4, 32077185), (5, 25661748), (6, 21384790), (7, 18329820), (10, 12830874), (12, 10692395), (14, 9164910), (15, 8553916), (20, 6415437), (21, 6109940), (28, 4582455), (30, 4276958), (35, 3665964), (42, 3054970), (60, 2138479), (70, 1832982), (84, 1527485), (105, 1221988), (140, 916491), (210, 610994), (420, 305497)]