178940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 393120

約数和(自身を除く): 214180

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 389, 460, 778, 1556, 1945, 3890, 7780, 8947, 17894, 35788, 44735, 89470, 178940]

約数ペア:

[(1, 178940), (2, 89470), (4, 44735), (5, 35788), (10, 17894), (20, 8947), (23, 7780), (46, 3890), (92, 1945), (115, 1556), (230, 778), (389, 460)]