18154357921

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1\times {\mathrm{991}}^1$

素因数の和:1445

約数の個数: 32

約数和(自身を含む): 21265940480

約数和(自身を除く): 3111582559

約数列:

[1, 7, 79, 157, 211, 553, 991, 1099, 1477, 6937, 12403, 16669, 33127, 78289, 86821, 116683, 155587, 209101, 231889, 548023, 1089109, 1463707, 2617033, 12291373, 16518979, 18319231, 32828857, 86039611, 115632853, 229801999, 2593479703, 18154357921]

約数ペア:

[(1, 18154357921), (7, 2593479703), (79, 229801999), (157, 115632853), (211, 86039611), (553, 32828857), (991, 18319231), (1099, 16518979), (1477, 12291373), (6937, 2617033), (12403, 1463707), (16669, 1089109), (33127, 548023), (78289, 231889), (86821, 209101), (116683, 155587)]