21297745

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{20983}}^1$

素因数の和:21024

約数の個数: 16

約数和(自身を含む): 30216960

約数和(自身を除く): 8919215

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 20983, 104915, 146881, 608507, 734405, 3042535, 4259549, 21297745]

約数ペア:

[(1, 21297745), (5, 4259549), (7, 3042535), (29, 734405), (35, 608507), (145, 146881), (203, 104915), (1015, 20983)]