21762020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155443}}^1$

素因数の和:155459

約数の個数: 24

約数和(自身を含む): 52229184

約数和(自身を除く): 30467164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155443, 310886, 621772, 777215, 1088101, 1554430, 2176202, 3108860, 4352404, 5440505, 10881010, 21762020]

約数ペア:

[(1, 21762020), (2, 10881010), (4, 5440505), (5, 4352404), (7, 3108860), (10, 2176202), (14, 1554430), (20, 1088101), (28, 777215), (35, 621772), (70, 310886), (140, 155443)]