21010437

素因数分解:

$3^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1997}}^1$

素因数の和:2177

約数の個数: 24

約数和(自身を含む): 34909056

約数和(自身を除く): 13898619

約数列:

[1, 3, 7, 9, 21, 63, 167, 501, 1169, 1503, 1997, 3507, 5991, 10521, 13979, 17973, 41937, 125811, 333499, 1000497, 2334493, 3001491, 7003479, 21010437]

約数ペア:

[(1, 21010437), (3, 7003479), (7, 3001491), (9, 2334493), (21, 1000497), (63, 333499), (167, 125811), (501, 41937), (1169, 17973), (1503, 13979), (1997, 10521), (3507, 5991)]