21777285

素因数分解:

$3^1\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1997}}^1$

素因数の和:2732

約数の個数: 16

約数和(自身を含む): 34909056

約数和(自身を除く): 13131771

約数列:

[1, 3, 5, 15, 727, 1997, 2181, 3635, 5991, 9985, 10905, 29955, 1451819, 4355457, 7259095, 21777285]

約数ペア:

[(1, 21777285), (3, 7259095), (5, 4355457), (15, 1451819), (727, 29955), (1997, 10905), (2181, 9985), (3635, 5991)]