19996401

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{607}}^1$

素因数の和:828

約数の個数: 16

約数和(自身を含む): 27238400

約数和(自身を除く): 7241999

約数列:

[1, 3, 79, 139, 237, 417, 607, 1821, 10981, 32943, 47953, 84373, 143859, 253119, 6665467, 19996401]

約数ペア:

[(1, 19996401), (3, 6665467), (79, 253119), (139, 143859), (237, 84373), (417, 47953), (607, 32943), (1821, 10981)]