131393457

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 215324928

約数和(自身を除く): 83931471

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 157, 207, 299, 311, 471, 897, 933, 1413, 2041, 2691, 2799, 3611, 4043, 6123, 7153, 10833, 12129, 18369, 21459, 32499, 36387, 46943, 48827, 64377, 92989, 140829, 146481, 278967, 422487, 439443, 634751, 836901, 1123021, 1904253, 3369063, 5712759, 10107189, 14599273, 43797819, 131393457]

約数ペア:

[(1, 131393457), (3, 43797819), (9, 14599273), (13, 10107189), (23, 5712759), (39, 3369063), (69, 1904253), (117, 1123021), (157, 836901), (207, 634751), (299, 439443), (311, 422487), (471, 278967), (897, 146481), (933, 140829), (1413, 92989), (2041, 64377), (2691, 48827), (2799, 46943), (3611, 36387), (4043, 32499), (6123, 21459), (7153, 18369), (10833, 12129)]