19707660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15641}}^1$

素因数の和:15663

約数の個数: 72

約数和(自身を含む): 68324256

約数和(自身を除く): 48616596

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15641, 31282, 46923, 62564, 78205, 93846, 109487, 140769, 156410, 187692, 218974, 234615, 281538, 312820, 328461, 437948, 469230, 547435, 563076, 656922, 703845, 938460, 985383, 1094870, 1313844, 1407690, 1642305, 1970766, 2189740, 2815380, 3284610, 3941532, 4926915, 6569220, 9853830, 19707660]

約数ペア:

[(1, 19707660), (2, 9853830), (3, 6569220), (4, 4926915), (5, 3941532), (6, 3284610), (7, 2815380), (9, 2189740), (10, 1970766), (12, 1642305), (14, 1407690), (15, 1313844), (18, 1094870), (20, 985383), (21, 938460), (28, 703845), (30, 656922), (35, 563076), (36, 547435), (42, 469230), (45, 437948), (60, 328461), (63, 312820), (70, 281538), (84, 234615), (90, 218974), (105, 187692), (126, 156410), (140, 140769), (180, 109487), (210, 93846), (252, 78205), (315, 62564), (420, 46923), (630, 31282), (1260, 15641)]