21152989

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2791}}^1$

素因数の和:2868

約数の個数: 16

約数和(自身を含む): 25329024

約数和(自身を除く): 4176035

約数列:

[1, 11, 13, 53, 143, 583, 689, 2791, 7579, 30701, 36283, 147923, 399113, 1627153, 1922999, 21152989]

約数ペア:

[(1, 21152989), (11, 1922999), (13, 1627153), (53, 399113), (143, 147923), (583, 36283), (689, 30701), (2791, 7579)]