21742420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155303}}^1$

素因数の和:155319

約数の個数: 24

約数和(自身を含む): 52182144

約数和(自身を除く): 30439724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155303, 310606, 621212, 776515, 1087121, 1553030, 2174242, 3106060, 4348484, 5435605, 10871210, 21742420]

約数ペア:

[(1, 21742420), (2, 10871210), (4, 5435605), (5, 4348484), (7, 3106060), (10, 2174242), (14, 1553030), (20, 1087121), (28, 776515), (35, 621212), (70, 310606), (140, 155303)]