18027681

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 28366848

約数和(自身を除く): 10339167

約数列:

[1, 3, 7, 21, 71, 107, 113, 213, 321, 339, 497, 749, 791, 1491, 2247, 2373, 7597, 8023, 12091, 22791, 24069, 36273, 53179, 56161, 84637, 159537, 168483, 253911, 858461, 2575383, 6009227, 18027681]

約数ペア:

[(1, 18027681), (3, 6009227), (7, 2575383), (21, 858461), (71, 253911), (107, 168483), (113, 159537), (213, 84637), (321, 56161), (339, 53179), (497, 36273), (749, 24069), (791, 22791), (1491, 12091), (2247, 8023), (2373, 7597)]