180780910

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{2521}}^1$

素因数の和:2700

約数の個数: 32

約数和(自身を含む): 333388224

約数和(自身を除く): 152607314

約数列:

[1, 2, 5, 10, 71, 101, 142, 202, 355, 505, 710, 1010, 2521, 5042, 7171, 12605, 14342, 25210, 35855, 71710, 178991, 254621, 357982, 509242, 894955, 1273105, 1789910, 2546210, 18078091, 36156182, 90390455, 180780910]

約数ペア:

[(1, 180780910), (2, 90390455), (5, 36156182), (10, 18078091), (71, 2546210), (101, 1789910), (142, 1273105), (202, 894955), (355, 509242), (505, 357982), (710, 254621), (1010, 178991), (2521, 71710), (5042, 35855), (7171, 25210), (12605, 14342)]