21099519

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17627}}^1$

素因数の和:17659

約数の個数: 24

約数和(自身を含む): 36666240

約数和(自身を除く): 15566721

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17627, 52881, 123389, 158643, 334913, 370167, 1004739, 1110501, 2344391, 3014217, 7033173, 21099519]

約数ペア:

[(1, 21099519), (3, 7033173), (7, 3014217), (9, 2344391), (19, 1110501), (21, 1004739), (57, 370167), (63, 334913), (133, 158643), (171, 123389), (399, 52881), (1197, 17627)]