81421587

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{383}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 134184960

約数和(自身を除く): 52763373

約数列:

[1, 3, 9, 13, 23, 39, 69, 79, 117, 207, 237, 299, 383, 711, 897, 1027, 1149, 1817, 2691, 3081, 3447, 4979, 5451, 8809, 9243, 14937, 16353, 23621, 26427, 30257, 44811, 70863, 79281, 90771, 114517, 212589, 272313, 343551, 393341, 695911, 1030653, 1180023, 2087733, 3540069, 6263199, 9046843, 27140529, 81421587]

約数ペア:

[(1, 81421587), (3, 27140529), (9, 9046843), (13, 6263199), (23, 3540069), (39, 2087733), (69, 1180023), (79, 1030653), (117, 695911), (207, 393341), (237, 343551), (299, 272313), (383, 212589), (711, 114517), (897, 90771), (1027, 79281), (1149, 70863), (1817, 44811), (2691, 30257), (3081, 26427), (3447, 23621), (4979, 16353), (5451, 14937), (8809, 9243)]