28142960

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:226

約数の個数: 80

約数和(自身を含む): 68269440

約数和(自身を除く): 40126480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 73, 79, 80, 122, 146, 158, 244, 292, 305, 316, 365, 395, 488, 584, 610, 632, 730, 790, 976, 1168, 1220, 1264, 1460, 1580, 2440, 2920, 3160, 4453, 4819, 4880, 5767, 5840, 6320, 8906, 9638, 11534, 17812, 19276, 22265, 23068, 24095, 28835, 35624, 38552, 44530, 46136, 48190, 57670, 71248, 77104, 89060, 92272, 96380, 115340, 178120, 192760, 230680, 351787, 356240, 385520, 461360, 703574, 1407148, 1758935, 2814296, 3517870, 5628592, 7035740, 14071480, 28142960]

約数ペア:

[(1, 28142960), (2, 14071480), (4, 7035740), (5, 5628592), (8, 3517870), (10, 2814296), (16, 1758935), (20, 1407148), (40, 703574), (61, 461360), (73, 385520), (79, 356240), (80, 351787), (122, 230680), (146, 192760), (158, 178120), (244, 115340), (292, 96380), (305, 92272), (316, 89060), (365, 77104), (395, 71248), (488, 57670), (584, 48190), (610, 46136), (632, 44530), (730, 38552), (790, 35624), (976, 28835), (1168, 24095), (1220, 23068), (1264, 22265), (1460, 19276), (1580, 17812), (2440, 11534), (2920, 9638), (3160, 8906), (4453, 6320), (4819, 5840), (4880, 5767)]