18636940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{133121}}^1$

素因数の和:133137

約数の個数: 24

約数和(自身を含む): 44728992

約数和(自身を除く): 26092052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 133121, 266242, 532484, 665605, 931847, 1331210, 1863694, 2662420, 3727388, 4659235, 9318470, 18636940]

約数ペア:

[(1, 18636940), (2, 9318470), (4, 4659235), (5, 3727388), (7, 2662420), (10, 1863694), (14, 1331210), (20, 931847), (28, 665605), (35, 532484), (70, 266242), (140, 133121)]