18497780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3571}}^1$

素因数の和:3624

約数の個数: 48

約数和(自身を含む): 45607296

約数和(自身を除く): 27109516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 3571, 5180, 7142, 14284, 17855, 24997, 35710, 49994, 71420, 99988, 124985, 132127, 249970, 264254, 499940, 528508, 660635, 924889, 1321270, 1849778, 2642540, 3699556, 4624445, 9248890, 18497780]

約数ペア:

[(1, 18497780), (2, 9248890), (4, 4624445), (5, 3699556), (7, 2642540), (10, 1849778), (14, 1321270), (20, 924889), (28, 660635), (35, 528508), (37, 499940), (70, 264254), (74, 249970), (140, 132127), (148, 124985), (185, 99988), (259, 71420), (370, 49994), (518, 35710), (740, 24997), (1036, 17855), (1295, 14284), (2590, 7142), (3571, 5180)]