18993559

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{587}}^1$

素因数の和:750

約数の個数: 16

約数和(自身を含む): 21732480

約数和(自身を除く): 2738921

約数列:

[1, 13, 19, 131, 247, 587, 1703, 2489, 7631, 11153, 32357, 76897, 144989, 999661, 1461043, 18993559]

約数ペア:

[(1, 18993559), (13, 1461043), (19, 999661), (131, 144989), (247, 76897), (587, 32357), (1703, 11153), (2489, 7631)]