20218820980

素因数分解:

$2^2\times 5^1\times {\mathrm{15649}}^1\times {\mathrm{64601}}^1$

素因数の和:80259

約数の個数: 24

約数和(自身を含む): 42462894600

約数和(自身を除く): 22244073620

約数列:

[1, 2, 4, 5, 10, 20, 15649, 31298, 62596, 64601, 78245, 129202, 156490, 258404, 312980, 323005, 646010, 1292020, 1010941049, 2021882098, 4043764196, 5054705245, 10109410490, 20218820980]

約数ペア:

[(1, 20218820980), (2, 10109410490), (4, 5054705245), (5, 4043764196), (10, 2021882098), (20, 1010941049), (15649, 1292020), (31298, 646010), (62596, 323005), (64601, 312980), (78245, 258404), (129202, 156490)]