20312817

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 31974144

約数和(自身を除く): 11661327

約数列:

[1, 3, 7, 21, 61, 101, 157, 183, 303, 427, 471, 707, 1099, 1281, 2121, 3297, 6161, 9577, 15857, 18483, 28731, 43127, 47571, 67039, 110999, 129381, 201117, 332997, 967277, 2901831, 6770939, 20312817]

約数ペア:

[(1, 20312817), (3, 6770939), (7, 2901831), (21, 967277), (61, 332997), (101, 201117), (157, 129381), (183, 110999), (303, 67039), (427, 47571), (471, 43127), (707, 28731), (1099, 18483), (1281, 15857), (2121, 9577), (3297, 6161)]