81120880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{643}}^1$

素因数の和:758

約数の個数: 80

約数和(自身を含む): 201237120

約数和(自身を除く): 120116240

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 83, 95, 152, 166, 190, 304, 332, 380, 415, 643, 664, 760, 830, 1286, 1328, 1520, 1577, 1660, 2572, 3154, 3215, 3320, 5144, 6308, 6430, 6640, 7885, 10288, 12217, 12616, 12860, 15770, 24434, 25232, 25720, 31540, 48868, 51440, 53369, 61085, 63080, 97736, 106738, 122170, 126160, 195472, 213476, 244340, 266845, 426952, 488680, 533690, 853904, 977360, 1014011, 1067380, 2028022, 2134760, 4056044, 4269520, 5070055, 8112088, 10140110, 16224176, 20280220, 40560440, 81120880]

約数ペア:

[(1, 81120880), (2, 40560440), (4, 20280220), (5, 16224176), (8, 10140110), (10, 8112088), (16, 5070055), (19, 4269520), (20, 4056044), (38, 2134760), (40, 2028022), (76, 1067380), (80, 1014011), (83, 977360), (95, 853904), (152, 533690), (166, 488680), (190, 426952), (304, 266845), (332, 244340), (380, 213476), (415, 195472), (643, 126160), (664, 122170), (760, 106738), (830, 97736), (1286, 63080), (1328, 61085), (1520, 53369), (1577, 51440), (1660, 48868), (2572, 31540), (3154, 25720), (3215, 25232), (3320, 24434), (5144, 15770), (6308, 12860), (6430, 12616), (6640, 12217), (7885, 10288)]