20959520

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1297}}^1$

素因数の和:1413

約数の個数: 48

約数和(自身を含む): 50045688

約数和(自身を除く): 29086168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1297, 1616, 2020, 2594, 3232, 4040, 5188, 6485, 8080, 10376, 12970, 16160, 20752, 25940, 41504, 51880, 103760, 130997, 207520, 261994, 523988, 654985, 1047976, 1309970, 2095952, 2619940, 4191904, 5239880, 10479760, 20959520]

約数ペア:

[(1, 20959520), (2, 10479760), (4, 5239880), (5, 4191904), (8, 2619940), (10, 2095952), (16, 1309970), (20, 1047976), (32, 654985), (40, 523988), (80, 261994), (101, 207520), (160, 130997), (202, 103760), (404, 51880), (505, 41504), (808, 25940), (1010, 20752), (1297, 16160), (1616, 12970), (2020, 10376), (2594, 8080), (3232, 6485), (4040, 5188)]