19859991

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{1697}}^1$

素因数の和:1830

約数の個数: 16

約数和(自身を含む): 27385344

約数和(自身を除く): 7525353

約数列:

[1, 3, 47, 83, 141, 249, 1697, 3901, 5091, 11703, 79759, 140851, 239277, 422553, 6619997, 19859991]

約数ペア:

[(1, 19859991), (3, 6619997), (47, 422553), (83, 239277), (141, 140851), (249, 79759), (1697, 11703), (3901, 5091)]