21891793

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{709}}^1$

素因数の和:1128

約数の個数: 16

約数和(自身を含む): 27400320

約数和(自身を除く): 5508527

約数列:

[1, 7, 11, 77, 401, 709, 2807, 4411, 4963, 7799, 30877, 54593, 284309, 1990163, 3127399, 21891793]

約数ペア:

[(1, 21891793), (7, 3127399), (11, 1990163), (77, 284309), (401, 54593), (709, 30877), (2807, 7799), (4411, 4963)]