258027760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{811}}^1$

素因数の和:962

約数の個数: 80

約数和(自身を含む): 621647712

約数和(自身を除く): 363619952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 97, 164, 194, 205, 328, 388, 410, 485, 656, 776, 811, 820, 970, 1552, 1622, 1640, 1940, 3244, 3280, 3880, 3977, 4055, 6488, 7760, 7954, 8110, 12976, 15908, 16220, 19885, 31816, 32440, 33251, 39770, 63632, 64880, 66502, 78667, 79540, 133004, 157334, 159080, 166255, 266008, 314668, 318160, 332510, 393335, 532016, 629336, 665020, 786670, 1258672, 1330040, 1573340, 2660080, 3146680, 3225347, 6293360, 6450694, 12901388, 16126735, 25802776, 32253470, 51605552, 64506940, 129013880, 258027760]

約数ペア:

[(1, 258027760), (2, 129013880), (4, 64506940), (5, 51605552), (8, 32253470), (10, 25802776), (16, 16126735), (20, 12901388), (40, 6450694), (41, 6293360), (80, 3225347), (82, 3146680), (97, 2660080), (164, 1573340), (194, 1330040), (205, 1258672), (328, 786670), (388, 665020), (410, 629336), (485, 532016), (656, 393335), (776, 332510), (811, 318160), (820, 314668), (970, 266008), (1552, 166255), (1622, 159080), (1640, 157334), (1940, 133004), (3244, 79540), (3280, 78667), (3880, 66502), (3977, 64880), (4055, 63632), (6488, 39770), (7760, 33251), (7954, 32440), (8110, 31816), (12976, 19885), (15908, 16220)]