216191660

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{111439}}^1$

素因数の和:111545

約数の個数: 24

約数和(自身を含む): 458687040

約数和(自身を除く): 242495380

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 111439, 222878, 445756, 557195, 1114390, 2228780, 10809583, 21619166, 43238332, 54047915, 108095830, 216191660]

約数ペア:

[(1, 216191660), (2, 108095830), (4, 54047915), (5, 43238332), (10, 21619166), (20, 10809583), (97, 2228780), (194, 1114390), (388, 557195), (485, 445756), (970, 222878), (1940, 111439)]