180020240

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{4583}}^1$

素因数の和:5087

約数の個数: 40

約数和(自身を含む): 419491008

約数和(自身を除く): 239470768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2455, 3928, 4583, 4910, 7856, 9166, 9820, 18332, 19640, 22915, 36664, 39280, 45830, 73328, 91660, 183320, 366640, 2250253, 4500506, 9001012, 11251265, 18002024, 22502530, 36004048, 45005060, 90010120, 180020240]

約数ペア:

[(1, 180020240), (2, 90010120), (4, 45005060), (5, 36004048), (8, 22502530), (10, 18002024), (16, 11251265), (20, 9001012), (40, 4500506), (80, 2250253), (491, 366640), (982, 183320), (1964, 91660), (2455, 73328), (3928, 45830), (4583, 39280), (4910, 36664), (7856, 22915), (9166, 19640), (9820, 18332)]