21160715

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{947}}^1$

素因数の和:1102

約数の個数: 16

約数和(自身を含む): 26278560

約数和(自身を除く): 5117845

約数列:

[1, 5, 41, 109, 205, 545, 947, 4469, 4735, 22345, 38827, 103223, 194135, 516115, 4232143, 21160715]

約数ペア:

[(1, 21160715), (5, 4232143), (41, 516115), (109, 194135), (205, 103223), (545, 38827), (947, 22345), (4469, 4735)]