87120080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26561}}^1$

素因数の和:26615

約数の個数: 40

約数和(自身を含む): 207502344

約数和(自身を除く): 120382264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 26561, 53122, 106244, 132805, 212488, 265610, 424976, 531220, 1062440, 1089001, 2124880, 2178002, 4356004, 5445005, 8712008, 10890010, 17424016, 21780020, 43560040, 87120080]

約数ペア:

[(1, 87120080), (2, 43560040), (4, 21780020), (5, 17424016), (8, 10890010), (10, 8712008), (16, 5445005), (20, 4356004), (40, 2178002), (41, 2124880), (80, 1089001), (82, 1062440), (164, 531220), (205, 424976), (328, 265610), (410, 212488), (656, 132805), (820, 106244), (1640, 53122), (3280, 26561)]