78177220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20903}}^1$

素因数の和:20940

約数の個数: 48

約数和(自身を含む): 189641088

約数和(自身を除く): 111463868

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 20903, 41806, 83612, 104515, 209030, 229933, 355351, 418060, 459866, 710702, 919732, 1149665, 1421404, 1776755, 2299330, 3553510, 3908861, 4598660, 7107020, 7817722, 15635444, 19544305, 39088610, 78177220]

約数ペア:

[(1, 78177220), (2, 39088610), (4, 19544305), (5, 15635444), (10, 7817722), (11, 7107020), (17, 4598660), (20, 3908861), (22, 3553510), (34, 2299330), (44, 1776755), (55, 1421404), (68, 1149665), (85, 919732), (110, 710702), (170, 459866), (187, 418060), (220, 355351), (340, 229933), (374, 209030), (748, 104515), (935, 83612), (1870, 41806), (3740, 20903)]