21355985

素因数分解:

$5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{3527}}^1$

素因数の和:3712

約数の個数: 16

約数和(自身を含む): 29465856

約数和(自身を除く): 8109871

約数列:

[1, 5, 7, 35, 173, 865, 1211, 3527, 6055, 17635, 24689, 123445, 610171, 3050855, 4271197, 21355985]

約数ペア:

[(1, 21355985), (5, 4271197), (7, 3050855), (35, 610171), (173, 123445), (865, 24689), (1211, 17635), (3527, 6055)]