20650980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49169}}^1$

素因数の和:49188

約数の個数: 48

約数和(自身を含む): 66084480

約数和(自身を除く): 45433500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49169, 98338, 147507, 196676, 245845, 295014, 344183, 491690, 590028, 688366, 737535, 983380, 1032549, 1376732, 1475070, 1720915, 2065098, 2950140, 3441830, 4130196, 5162745, 6883660, 10325490, 20650980]

約数ペア:

[(1, 20650980), (2, 10325490), (3, 6883660), (4, 5162745), (5, 4130196), (6, 3441830), (7, 2950140), (10, 2065098), (12, 1720915), (14, 1475070), (15, 1376732), (20, 1032549), (21, 983380), (28, 737535), (30, 688366), (35, 590028), (42, 491690), (60, 344183), (70, 295014), (84, 245845), (105, 196676), (140, 147507), (210, 98338), (420, 49169)]