81585400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31379}}^1$

素因数の和:31408

約数の個数: 48

約数和(自身を含む): 204283800

約数和(自身を除く): 122698400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 31379, 62758, 125516, 156895, 251032, 313790, 407927, 627580, 784475, 815854, 1255160, 1568950, 1631708, 2039635, 3137900, 3263416, 4079270, 6275800, 8158540, 10198175, 16317080, 20396350, 40792700, 81585400]

約数ペア:

[(1, 81585400), (2, 40792700), (4, 20396350), (5, 16317080), (8, 10198175), (10, 8158540), (13, 6275800), (20, 4079270), (25, 3263416), (26, 3137900), (40, 2039635), (50, 1631708), (52, 1568950), (65, 1255160), (100, 815854), (104, 784475), (130, 627580), (200, 407927), (260, 313790), (325, 251032), (520, 156895), (650, 125516), (1300, 62758), (2600, 31379)]