19871189

素因数分解:

${\mathrm{13}}^2\times {\mathrm{307}}^1\times {\mathrm{383}}^1$

素因数の和:716

約数の個数: 12

約数和(自身を含む): 21643776

約数和(自身を除く): 1772587

約数列:

[1, 13, 169, 307, 383, 3991, 4979, 51883, 64727, 117581, 1528553, 19871189]

約数ペア:

[(1, 19871189), (13, 1528553), (169, 117581), (307, 64727), (383, 51883), (3991, 4979)]