21068451

素因数分解:

$3^3\times {\mathrm{149}}^1\times {\mathrm{5237}}^1$

素因数の和:5395

約数の個数: 16

約数和(自身を含む): 31428000

約数和(自身を除く): 10359549

約数列:

[1, 3, 9, 27, 149, 447, 1341, 4023, 5237, 15711, 47133, 141399, 780313, 2340939, 7022817, 21068451]

約数ペア:

[(1, 21068451), (3, 7022817), (9, 2340939), (27, 780313), (149, 141399), (447, 47133), (1341, 15711), (4023, 5237)]