21710549

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:620

約数の個数: 16

約数和(自身を含む): 25522560

約数和(自身を除く): 3812011

約数列:

[1, 7, 53, 139, 371, 421, 973, 2947, 7367, 22313, 51569, 58519, 156191, 409633, 3101507, 21710549]

約数ペア:

[(1, 21710549), (7, 3101507), (53, 409633), (139, 156191), (371, 58519), (421, 51569), (973, 22313), (2947, 7367)]