209920417

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{83071}}^1$

素因数の和:83116

約数の個数: 12

約数和(自身を含む): 253203456

約数和(自身を除く): 43283039

約数列:

[1, 7, 19, 133, 361, 2527, 83071, 581497, 1578349, 11048443, 29988631, 209920417]

約数ペア:

[(1, 209920417), (7, 29988631), (19, 11048443), (133, 1578349), (361, 581497), (2527, 83071)]