18216940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{130121}}^1$

素因数の和:130137

約数の個数: 24

約数和(自身を含む): 43720992

約数和(自身を除く): 25504052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 130121, 260242, 520484, 650605, 910847, 1301210, 1821694, 2602420, 3643388, 4554235, 9108470, 18216940]

約数ペア:

[(1, 18216940), (2, 9108470), (4, 4554235), (5, 3643388), (7, 2602420), (10, 1821694), (14, 1301210), (20, 910847), (28, 650605), (35, 520484), (70, 260242), (140, 130121)]