870898520

素因数分解:

$2^3\times 5^1\times {\mathrm{2221}}^1\times {\mathrm{9803}}^1$

素因数の和:12035

約数の個数: 32

約数和(自身を含む): 1960603920

約数和(自身を除く): 1089705400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2221, 4442, 8884, 9803, 11105, 17768, 19606, 22210, 39212, 44420, 49015, 78424, 88840, 98030, 196060, 392120, 21772463, 43544926, 87089852, 108862315, 174179704, 217724630, 435449260, 870898520]

約数ペア:

[(1, 870898520), (2, 435449260), (4, 217724630), (5, 174179704), (8, 108862315), (10, 87089852), (20, 43544926), (40, 21772463), (2221, 392120), (4442, 196060), (8884, 98030), (9803, 88840), (11105, 78424), (17768, 49015), (19606, 44420), (22210, 39212)]