18700853871

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{25097}}^1$

素因数の和:25288

約数の個数: 48

約数和(自身を含む): 30007971936

約数和(自身を除く): 11307118065

約数列:

[1, 3, 7, 21, 37, 49, 111, 137, 147, 259, 411, 777, 959, 1813, 2877, 5069, 5439, 6713, 15207, 20139, 25097, 35483, 75291, 106449, 175679, 248381, 527037, 745143, 928589, 1229753, 2785767, 3438289, 3689259, 6500123, 10314867, 19500369, 24068023, 45500861, 72204069, 127216693, 136502583, 168476161, 381650079, 505428483, 890516851, 2671550553, 6233617957, 18700853871]

約数ペア:

[(1, 18700853871), (3, 6233617957), (7, 2671550553), (21, 890516851), (37, 505428483), (49, 381650079), (111, 168476161), (137, 136502583), (147, 127216693), (259, 72204069), (411, 45500861), (777, 24068023), (959, 19500369), (1813, 10314867), (2877, 6500123), (5069, 3689259), (5439, 3438289), (6713, 2785767), (15207, 1229753), (20139, 928589), (25097, 745143), (35483, 527037), (75291, 248381), (106449, 175679)]