12705080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 29998080

約数和(自身を除く): 17293000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 61, 82, 122, 127, 164, 205, 244, 254, 305, 328, 410, 488, 508, 610, 635, 820, 1016, 1220, 1270, 1640, 2440, 2501, 2540, 5002, 5080, 5207, 7747, 10004, 10414, 12505, 15494, 20008, 20828, 25010, 26035, 30988, 38735, 41656, 50020, 52070, 61976, 77470, 100040, 104140, 154940, 208280, 309880, 317627, 635254, 1270508, 1588135, 2541016, 3176270, 6352540, 12705080]

約数ペア:

[(1, 12705080), (2, 6352540), (4, 3176270), (5, 2541016), (8, 1588135), (10, 1270508), (20, 635254), (40, 317627), (41, 309880), (61, 208280), (82, 154940), (122, 104140), (127, 100040), (164, 77470), (205, 61976), (244, 52070), (254, 50020), (305, 41656), (328, 38735), (410, 30988), (488, 26035), (508, 25010), (610, 20828), (635, 20008), (820, 15494), (1016, 12505), (1220, 10414), (1270, 10004), (1640, 7747), (2440, 5207), (2501, 5080), (2540, 5002)]