20342420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{145303}}^1$

素因数の和:145319

約数の個数: 24

約数和(自身を含む): 48822144

約数和(自身を除く): 28479724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145303, 290606, 581212, 726515, 1017121, 1453030, 2034242, 2906060, 4068484, 5085605, 10171210, 20342420]

約数ペア:

[(1, 20342420), (2, 10171210), (4, 5085605), (5, 4068484), (7, 2906060), (10, 2034242), (14, 1453030), (20, 1017121), (28, 726515), (35, 581212), (70, 290606), (140, 145303)]