21038073

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52727}}^1$

素因数の和:52756

約数の個数: 16

約数和(自身を含む): 33745920

約数和(自身を除く): 12707847

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52727, 158181, 369089, 1001813, 1107267, 3005439, 7012691, 21038073]

約数ペア:

[(1, 21038073), (3, 7012691), (7, 3005439), (19, 1107267), (21, 1001813), (57, 369089), (133, 158181), (399, 52727)]