21042063

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17579}}^1$

素因数の和:17611

約数の個数: 24

約数和(自身を含む): 36566400

約数和(自身を除く): 15524337

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17579, 52737, 123053, 158211, 334001, 369159, 1002003, 1107477, 2338007, 3006009, 7014021, 21042063]

約数ペア:

[(1, 21042063), (3, 7014021), (7, 3006009), (9, 2338007), (19, 1107477), (21, 1002003), (57, 369159), (63, 334001), (133, 158211), (171, 123053), (399, 52737), (1197, 17579)]