215691820

素因数分解:

$2^2\times 5^1\times {\mathrm{2531}}^1\times {\mathrm{4261}}^1$

素因数の和:6801

約数の個数: 24

約数和(自身を含む): 453238128

約数和(自身を除く): 237546308

約数列:

[1, 2, 4, 5, 10, 20, 2531, 4261, 5062, 8522, 10124, 12655, 17044, 21305, 25310, 42610, 50620, 85220, 10784591, 21569182, 43138364, 53922955, 107845910, 215691820]

約数ペア:

[(1, 215691820), (2, 107845910), (4, 53922955), (5, 43138364), (10, 21569182), (20, 10784591), (2531, 85220), (4261, 50620), (5062, 42610), (8522, 25310), (10124, 21305), (12655, 17044)]