20940540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{829}}^1$

素因数の和:1262

約数の個数: 48

約数和(自身を含む): 58843680

約数和(自身を除く): 37903140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 421, 829, 842, 1263, 1658, 1684, 2105, 2487, 2526, 3316, 4145, 4210, 4974, 5052, 6315, 8290, 8420, 9948, 12435, 12630, 16580, 24870, 25260, 49740, 349009, 698018, 1047027, 1396036, 1745045, 2094054, 3490090, 4188108, 5235135, 6980180, 10470270, 20940540]

約数ペア:

[(1, 20940540), (2, 10470270), (3, 6980180), (4, 5235135), (5, 4188108), (6, 3490090), (10, 2094054), (12, 1745045), (15, 1396036), (20, 1047027), (30, 698018), (60, 349009), (421, 49740), (829, 25260), (842, 24870), (1263, 16580), (1658, 12630), (1684, 12435), (2105, 9948), (2487, 8420), (2526, 8290), (3316, 6315), (4145, 5052), (4210, 4974)]