19811253

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{617}}^1$

素因数の和:777

約数の個数: 32

約数和(自身を含む): 33223680

約数和(自身を除く): 13412427

約数列:

[1, 3, 7, 11, 21, 33, 77, 139, 231, 417, 617, 973, 1529, 1851, 2919, 4319, 4587, 6787, 10703, 12957, 20361, 32109, 47509, 85763, 142527, 257289, 600341, 943393, 1801023, 2830179, 6603751, 19811253]

約数ペア:

[(1, 19811253), (3, 6603751), (7, 2830179), (11, 1801023), (21, 943393), (33, 600341), (77, 257289), (139, 142527), (231, 85763), (417, 47509), (617, 32109), (973, 20361), (1529, 12957), (1851, 10703), (2919, 6787), (4319, 4587)]