21152199

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:855

約数の個数: 24

約数和(自身を含む): 30965248

約数和(自身を除く): 9813049

約数列:

[1, 3, 17, 31, 51, 93, 289, 527, 787, 867, 1581, 2361, 8959, 13379, 24397, 26877, 40137, 73191, 227443, 414749, 682329, 1244247, 7050733, 21152199]

約数ペア:

[(1, 21152199), (3, 7050733), (17, 1244247), (31, 682329), (51, 414749), (93, 227443), (289, 73191), (527, 40137), (787, 26877), (867, 24397), (1581, 13379), (2361, 8959)]