20809921951

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{547}}^1\times {\mathrm{11299}}^1$

素因数の和:11903

約数の個数: 32

約数和(自身を含む): 26354854400

約数和(自身を除く): 5544932449

約数列:

[1, 7, 13, 37, 91, 259, 481, 547, 3367, 3829, 7111, 11299, 20239, 49777, 79093, 141673, 146887, 263107, 418063, 1028209, 1841749, 2926441, 5434819, 6180553, 38043733, 43263871, 80347189, 228680461, 562430323, 1600763227, 2972845993, 20809921951]

約数ペア:

[(1, 20809921951), (7, 2972845993), (13, 1600763227), (37, 562430323), (91, 228680461), (259, 80347189), (481, 43263871), (547, 38043733), (3367, 6180553), (3829, 5434819), (7111, 2926441), (11299, 1841749), (20239, 1028209), (49777, 418063), (79093, 263107), (141673, 146887)]