21965215

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1\times {\mathrm{619}}^1$

素因数の和:822

約数の個数: 16

約数和(自身を含む): 27141120

約数和(自身を除く): 5175905

約数列:

[1, 5, 47, 151, 235, 619, 755, 3095, 7097, 29093, 35485, 93469, 145465, 467345, 4393043, 21965215]

約数ペア:

[(1, 21965215), (5, 4393043), (47, 467345), (151, 145465), (235, 93469), (619, 35485), (755, 29093), (3095, 7097)]