19899187

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2287}}^1$

素因数の和:2418

約数の個数: 16

約数和(自身を含む): 25039872

約数和(自身を除く): 5140685

約数列:

[1, 7, 11, 77, 113, 791, 1243, 2287, 8701, 16009, 25157, 176099, 258431, 1809017, 2842741, 19899187]

約数ペア:

[(1, 19899187), (7, 2842741), (11, 1809017), (77, 258431), (113, 176099), (791, 25157), (1243, 16009), (2287, 8701)]