18390540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43787}}^1$

素因数の和:43806

約数の個数: 48

約数和(自身を含む): 58851072

約数和(自身を除く): 40460532

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, 43787, 87574, 131361, 175148, 218935, 262722, 306509, 437870, 525444, 613018, 656805, 875740, 919527, 1226036, 1313610, 1532545, 1839054, 2627220, 3065090, 3678108, 4597635, 6130180, 9195270, 18390540]

約数ペア:

[(1, 18390540), (2, 9195270), (3, 6130180), (4, 4597635), (5, 3678108), (6, 3065090), (7, 2627220), (10, 1839054), (12, 1532545), (14, 1313610), (15, 1226036), (20, 919527), (21, 875740), (28, 656805), (30, 613018), (35, 525444), (42, 437870), (60, 306509), (70, 262722), (84, 218935), (105, 175148), (140, 131361), (210, 87574), (420, 43787)]