12721653

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1787}}^1$

素因数の和:1913

約数の個数: 24

約数和(自身を含む): 21198528

約数和(自身を除く): 8476875

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 1787, 2373, 5361, 7119, 12509, 16083, 37527, 112581, 201931, 605793, 1413517, 1817379, 4240551, 12721653]

約数ペア:

[(1, 12721653), (3, 4240551), (7, 1817379), (9, 1413517), (21, 605793), (63, 201931), (113, 112581), (339, 37527), (791, 16083), (1017, 12509), (1787, 7119), (2373, 5361)]