18734440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8837}}^1$

素因数の和:8901

約数の個数: 32

約数和(自身を含む): 42952680

約数和(自身を除く): 24218240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8837, 17674, 35348, 44185, 70696, 88370, 176740, 353480, 468361, 936722, 1873444, 2341805, 3746888, 4683610, 9367220, 18734440]

約数ペア:

[(1, 18734440), (2, 9367220), (4, 4683610), (5, 3746888), (8, 2341805), (10, 1873444), (20, 936722), (40, 468361), (53, 353480), (106, 176740), (212, 88370), (265, 70696), (424, 44185), (530, 35348), (1060, 17674), (2120, 8837)]