21950420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{10069}}^1$

素因数の和:10187

約数の個数: 24

約数和(自身を含む): 46523400

約数和(自身を除く): 24572980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 10069, 20138, 40276, 50345, 100690, 201380, 1097521, 2195042, 4390084, 5487605, 10975210, 21950420]

約数ペア:

[(1, 21950420), (2, 10975210), (4, 5487605), (5, 4390084), (10, 2195042), (20, 1097521), (109, 201380), (218, 100690), (436, 50345), (545, 40276), (1090, 20138), (2180, 10069)]