209280980

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{53117}}^1$

素因数の和:53323

約数の個数: 24

約数和(自身を含む): 441729288

約数和(自身を除く): 232448308

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 53117, 106234, 212468, 265585, 531170, 1062340, 10464049, 20928098, 41856196, 52320245, 104640490, 209280980]

約数ペア:

[(1, 209280980), (2, 104640490), (4, 52320245), (5, 41856196), (10, 20928098), (20, 10464049), (197, 1062340), (394, 531170), (788, 265585), (985, 212468), (1970, 106234), (3940, 53117)]