21255545

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{907}}^1$

素因数の和:1064

約数の個数: 16

約数和(自身を含む): 26368320

約数和(自身を除く): 5112775

約数列:

[1, 5, 43, 109, 215, 545, 907, 4535, 4687, 23435, 39001, 98863, 195005, 494315, 4251109, 21255545]

約数ペア:

[(1, 21255545), (5, 4251109), (43, 494315), (109, 195005), (215, 98863), (545, 39001), (907, 23435), (4535, 4687)]