21537549

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{571}}^1$

素因数の和:718

約数の個数: 32

約数和(自身を含む): 35143680

約数和(自身を除く): 13606131

約数列:

[1, 3, 9, 11, 27, 33, 99, 127, 297, 381, 571, 1143, 1397, 1713, 3429, 4191, 5139, 6281, 12573, 15417, 18843, 37719, 56529, 72517, 169587, 217551, 652653, 797687, 1957959, 2393061, 7179183, 21537549]

約数ペア:

[(1, 21537549), (3, 7179183), (9, 2393061), (11, 1957959), (27, 797687), (33, 652653), (99, 217551), (127, 169587), (297, 72517), (381, 56529), (571, 37719), (1143, 18843), (1397, 15417), (1713, 12573), (3429, 6281), (4191, 5139)]