21493085

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{971}}^1$

素因数の和:1228

約数の個数: 16

約数和(自身を含む): 27293760

約数和(自身を除く): 5800675

約数列:

[1, 5, 19, 95, 233, 971, 1165, 4427, 4855, 18449, 22135, 92245, 226243, 1131215, 4298617, 21493085]

約数ペア:

[(1, 21493085), (5, 4298617), (19, 1131215), (95, 226243), (233, 92245), (971, 22135), (1165, 18449), (4427, 4855)]