28945880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16829}}^1$

素因数の和:16883

約数の個数: 32

約数和(自身を含む): 66646800

約数和(自身を除く): 37700920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16829, 33658, 67316, 84145, 134632, 168290, 336580, 673160, 723647, 1447294, 2894588, 3618235, 5789176, 7236470, 14472940, 28945880]

約数ペア:

[(1, 28945880), (2, 14472940), (4, 7236470), (5, 5789176), (8, 3618235), (10, 2894588), (20, 1447294), (40, 723647), (43, 673160), (86, 336580), (172, 168290), (215, 134632), (344, 84145), (430, 67316), (860, 33658), (1720, 16829)]