21042140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150301}}^1$

素因数の和:150317

約数の個数: 24

約数和(自身を含む): 50501472

約数和(自身を除く): 29459332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150301, 300602, 601204, 751505, 1052107, 1503010, 2104214, 3006020, 4208428, 5260535, 10521070, 21042140]

約数ペア:

[(1, 21042140), (2, 10521070), (4, 5260535), (5, 4208428), (7, 3006020), (10, 2104214), (14, 1503010), (20, 1052107), (28, 751505), (35, 601204), (70, 300602), (140, 150301)]