131490280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{80177}}^1$

素因数の和:80229

約数の個数: 32

約数和(自身を含む): 303072840

約数和(自身を除く): 171582560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 80177, 160354, 320708, 400885, 641416, 801770, 1603540, 3207080, 3287257, 6574514, 13149028, 16436285, 26298056, 32872570, 65745140, 131490280]

約数ペア:

[(1, 131490280), (2, 65745140), (4, 32872570), (5, 26298056), (8, 16436285), (10, 13149028), (20, 6574514), (40, 3287257), (41, 3207080), (82, 1603540), (164, 801770), (205, 641416), (328, 400885), (410, 320708), (820, 160354), (1640, 80177)]