68878360

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{41999}}^1$

素因数の和:42051

約数の個数: 32

約数和(自身を含む): 158760000

約数和(自身を除く): 89881640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 41999, 83998, 167996, 209995, 335992, 419990, 839980, 1679960, 1721959, 3443918, 6887836, 8609795, 13775672, 17219590, 34439180, 68878360]

約数ペア:

[(1, 68878360), (2, 34439180), (4, 17219590), (5, 13775672), (8, 8609795), (10, 6887836), (20, 3443918), (40, 1721959), (41, 1679960), (82, 839980), (164, 419990), (205, 335992), (328, 209995), (410, 167996), (820, 83998), (1640, 41999)]