129013880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{811}}^1$

素因数の和:960

約数の個数: 64

約数和(自身を含む): 300797280

約数和(自身を除く): 171783400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 194, 205, 328, 388, 410, 485, 776, 811, 820, 970, 1622, 1640, 1940, 3244, 3880, 3977, 4055, 6488, 7954, 8110, 15908, 16220, 19885, 31816, 32440, 33251, 39770, 66502, 78667, 79540, 133004, 157334, 159080, 166255, 266008, 314668, 332510, 393335, 629336, 665020, 786670, 1330040, 1573340, 3146680, 3225347, 6450694, 12901388, 16126735, 25802776, 32253470, 64506940, 129013880]

約数ペア:

[(1, 129013880), (2, 64506940), (4, 32253470), (5, 25802776), (8, 16126735), (10, 12901388), (20, 6450694), (40, 3225347), (41, 3146680), (82, 1573340), (97, 1330040), (164, 786670), (194, 665020), (205, 629336), (328, 393335), (388, 332510), (410, 314668), (485, 266008), (776, 166255), (811, 159080), (820, 157334), (970, 133004), (1622, 79540), (1640, 78667), (1940, 66502), (3244, 39770), (3880, 33251), (3977, 32440), (4055, 31816), (6488, 19885), (7954, 16220), (8110, 15908)]