18722865

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{617}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 36427392

約数和(自身を除く): 17704527

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 289, 357, 595, 617, 867, 1445, 1785, 1851, 2023, 3085, 4319, 4335, 6069, 9255, 10115, 10489, 12957, 21595, 30345, 31467, 52445, 64785, 73423, 157335, 178313, 220269, 367115, 534939, 891565, 1101345, 1248191, 2674695, 3744573, 6240955, 18722865]

約数ペア:

[(1, 18722865), (3, 6240955), (5, 3744573), (7, 2674695), (15, 1248191), (17, 1101345), (21, 891565), (35, 534939), (51, 367115), (85, 220269), (105, 178313), (119, 157335), (255, 73423), (289, 64785), (357, 52445), (595, 31467), (617, 30345), (867, 21595), (1445, 12957), (1785, 10489), (1851, 10115), (2023, 9255), (3085, 6069), (4319, 4335)]