18886497

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 10973343

約数列:

[1, 3, 7, 21, 53, 71, 159, 213, 239, 371, 497, 717, 1113, 1491, 1673, 3763, 5019, 11289, 12667, 16969, 26341, 38001, 50907, 79023, 88669, 118783, 266007, 356349, 899357, 2698071, 6295499, 18886497]

約数ペア:

[(1, 18886497), (3, 6295499), (7, 2698071), (21, 899357), (53, 356349), (71, 266007), (159, 118783), (213, 88669), (239, 79023), (371, 50907), (497, 38001), (717, 26341), (1113, 16969), (1491, 12667), (1673, 11289), (3763, 5019)]