20395620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16187}}^1$

素因数の和:16209

約数の個数: 72

約数和(自身を含む): 70709184

約数和(自身を除く): 50313564

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, 16187, 32374, 48561, 64748, 80935, 97122, 113309, 145683, 161870, 194244, 226618, 242805, 291366, 323740, 339927, 453236, 485610, 566545, 582732, 679854, 728415, 971220, 1019781, 1133090, 1359708, 1456830, 1699635, 2039562, 2266180, 2913660, 3399270, 4079124, 5098905, 6798540, 10197810, 20395620]

約数ペア:

[(1, 20395620), (2, 10197810), (3, 6798540), (4, 5098905), (5, 4079124), (6, 3399270), (7, 2913660), (9, 2266180), (10, 2039562), (12, 1699635), (14, 1456830), (15, 1359708), (18, 1133090), (20, 1019781), (21, 971220), (28, 728415), (30, 679854), (35, 582732), (36, 566545), (42, 485610), (45, 453236), (60, 339927), (63, 323740), (70, 291366), (84, 242805), (90, 226618), (105, 194244), (126, 161870), (140, 145683), (180, 113309), (210, 97122), (252, 80935), (315, 64748), (420, 48561), (630, 32374), (1260, 16187)]