21530047

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{12157}}^1$

素因数の和:12198

約数の個数: 16

約数和(自身を含む): 28012032

約数和(自身を除く): 6481985

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 12157, 85099, 133727, 279611, 936089, 1957277, 3075721, 21530047]

約数ペア:

[(1, 21530047), (7, 3075721), (11, 1957277), (23, 936089), (77, 279611), (161, 133727), (253, 85099), (1771, 12157)]