21712100

素因数分解:

$2^2\times 5^2\times {\mathrm{217121}}^1$

素因数の和:217135

約数の個数: 18

約数和(自身を含む): 47115474

約数和(自身を除く): 25403374

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 217121, 434242, 868484, 1085605, 2171210, 4342420, 5428025, 10856050, 21712100]

約数ペア:

[(1, 21712100), (2, 10856050), (4, 5428025), (5, 4342420), (10, 2171210), (20, 1085605), (25, 868484), (50, 434242), (100, 217121)]