290450980

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{149717}}^1$

素因数の和:149823

約数の個数: 24

約数和(自身を含む): 616239288

約数和(自身を除く): 325788308

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 149717, 299434, 598868, 748585, 1497170, 2994340, 14522549, 29045098, 58090196, 72612745, 145225490, 290450980]

約数ペア:

[(1, 290450980), (2, 145225490), (4, 72612745), (5, 58090196), (10, 29045098), (20, 14522549), (97, 2994340), (194, 1497170), (388, 748585), (485, 598868), (970, 299434), (1940, 149717)]