21359905

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{35899}}^1$

素因数の和:35928

約数の個数: 16

約数和(自身を含む): 31017600

約数和(自身を除く): 9657695

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 35899, 179495, 251293, 610283, 1256465, 3051415, 4271981, 21359905]

約数ペア:

[(1, 21359905), (5, 4271981), (7, 3051415), (17, 1256465), (35, 610283), (85, 251293), (119, 179495), (595, 35899)]