21754369

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3919}}^1$

素因数の和:4000

約数の個数: 16

約数和(自身を含む): 27220480

約数和(自身を除く): 5466111

約数列:

[1, 7, 13, 61, 91, 427, 793, 3919, 5551, 27433, 50947, 239059, 356629, 1673413, 3107767, 21754369]

約数ペア:

[(1, 21754369), (7, 3107767), (13, 1673413), (61, 356629), (91, 239059), (427, 50947), (793, 27433), (3919, 5551)]