21182420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151303}}^1$

素因数の和:151319

約数の個数: 24

約数和(自身を含む): 50838144

約数和(自身を除く): 29655724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151303, 302606, 605212, 756515, 1059121, 1513030, 2118242, 3026060, 4236484, 5295605, 10591210, 21182420]

約数ペア:

[(1, 21182420), (2, 10591210), (4, 5295605), (5, 4236484), (7, 3026060), (10, 2118242), (14, 1513030), (20, 1059121), (28, 756515), (35, 605212), (70, 302606), (140, 151303)]