221520142

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^2$

素因数の和:2571

約数の個数: 12

約数和(自身を含む): 337230216

約数和(自身を除く): 115710074

約数列:

[1, 2, 71, 142, 1249, 2498, 88679, 177358, 1560001, 3120002, 110760071, 221520142]

約数ペア:

[(1, 221520142), (2, 110760071), (71, 3120002), (142, 1560001), (1249, 177358), (2498, 88679)]